MURDER USA: David H. Johnson Found Guilty in Homicide of Rose M. Long; Found Beaten to Death in Home Invasion; Car Stolen from Home near Mental Health Clinic and Calvert County Jail; Sentenced to Two Life Sentences

DAVID HAROLD JOHNSON is currently incarcerated at the Maryland State Prison in Cumberland, Md.

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PRINCE FREDERICK, MD – Calvert County States Attorney Robert Harvey announced the outcome of the trial for murder and rape of David Harold Johnson:
On January 11, 2021, David Harold Johnson was sentenced for his role in the rape and murder of Rose Marie Long, age 71, of Prince Frederick, MD.  Judge Mark S. Chandlee of the Circuit Court for Calvert County sentenced Johnson to life imprisonment for first-degree murder, life imprisonment for first-degree rape, and five years’ imprisonment for the theft of Ms. Long’s vehicle.  The sentences were made to run consecutively to one another, meaning that Johnson, age 49, likely will spend the rest of his life in prison.

Johnson was residing in Calvert County on Sunday, June 7, 2020, when he entered Ms. Long’s home on Stafford Road in Prince Frederick.  Once inside, he raped Ms. Long and strangled her to death using a cell phone charging cord.  He then stole her vehicle and left the area.

Johnson was identified as the assailant using the Ring doorbell video obtained from Ms. Long’s home.  A lookout was broadcast.  On June 9, 2020, a concerned citizen spotted Johnson driving Ms. Long’s vehicle on Route 4 in the vicinity of Skinner’s Turn Road.  He called the police, and Johnson was arrested by Sheriff’s Office deputies a short time later.  Johnson ultimately admitted his involvement to detectives from the Maryland State Police.  Johnson was also identified as the perpetrator through DNA samples obtained from Ms. Long’s body.

The case was prosecuted by Calvert County State’s Attorney Robert H. Harvey, Jr.  Harvey wishes to thank Cpl. Kyle Simms of the Maryland State Police and his investigative team for their thoroughness, attention to detail, and dedication to the pursuit of justice in this case.

MURDER USA: Rose M. Long Found Beaten to Death in Home Invasion; Car Stolen from Home near Mental Health Clinic and Calvert County Jail



David Harold Johnson (DOB 08/16/1971) was charged by way of criminal information by the Anne Arundel County States Attorney on Dec. 22, 2010, at the time he was an inmate of the Maryland State Prison in Jessup, Maryland, with felony first-degree burglary, armed robbery, conspiracy to commit robbery, second and first-degree assault, theft between $1,000 and $10,000, reckless endangerment, use of a deadly weapon to injure. In a plea deal with Anne Arundel County States Attorney Anne Colt Leitess on June 1, 2011, Johnson was sentenced to twenty years in prison with all but twelve years suspended. THE DEAL: Johnson entered a guilty plea to armed robbery with all other charges dropped.

David Harold Johnson pleaded guilty in Prince Georges Circuit Court on Sept. 23, 1996 to 15 years for Count 1 assault with the intent to maim with 2,232 days of credit for time served and all but 6 years suspended and put on probation for two years following his release from prison.  On Nov. 30, 2001, Johnson admitted he had violated the terms of his probation when appeared before Circuit Court Judge Weatherly, who sent him back to the hoosegow for 90 days.

MURDER USA: DAVID H. JOHNSON ARRESTED in the murder of Rose M. Long Found Beaten to Death in Home Invasion; Car Stolen from Home near Mental Health Clinic and Calvert County Jail

PRINCE FREDERICK, MD — The Maryland State Police spokesman Gregory Shipley reported that thanks to an alert citizen who spotted the stolen vehicle, the suspect wanted in connection with the murder of a woman found dead yesterday in her Calvert County home was arrested early this morning by a Maryland state trooper and a Calvert County deputy sheriff.

The suspect is identified as David H. Johnson, 48, who had been recently living in Prince Frederick, Md.  He is charged on an arrest warrant this morning with first-degree murder, second-degree murder, home invasion, first and second-degree assault, burglary and theft.  Additional charges are pending.  He is being processed at the Maryland State Police Prince Frederick Barrack and will be taken to the county central booking center for an initial appearance before a court commissioner.


State Police investigators from the Homicide Unit and the Criminal Enforcement Division, assisted by crime scene technicians and troopers from the Prince Frederick Barrack, worked through the day and night yesterday processing the scene, collecting evidence and canvassing the neighborhood for anyone who could provide information about a suspect.

During the night, investigators were able to develop information and evidence that identified the suspect as Johnson.  Investigators obtained an arrest warrant for Johnson and a search was initiated for him.  A lookout for the victim’s vehicle, which was missing from her home, had been issued last night.

Shortly before 5:00 a.m. today, a motorist spotted the victim’s vehicle and called police.  A Prince Frederick Barrack trooper and a Calvert County deputy sheriff located and stopped the car on Rt. 4 at Skinners Turn Road in Owings, Md.  The driver, identified as Johnson, got out of the car and was arrested without incident.

Investigators believe Johnson had been staying at a home in the victim’s neighborhood during the past few months.  Prior to that, they believe he was living in Washington, D.C.

PRINCE FREDERICK, MD — Living alone, across the highway from a Calvert County Mental Health Clinic and two doors down from the Calvert County Jail could have contributed to the circumstances leading to the murder of a Barstow woman who was found dead on June 8, 2020.

On one hand, the mental health facility and the Calvert Jail could have security cameras that may lead the Maryland State Police to find the killer of Rose M. Long, 71, of 241 Stafford Road, near Prince Frederick. On the other hand, many of the persons who are clients of the Calvert Behavioral Health Center are referred by the criminal courts, the jail, and various mental health professionals. The nature of the clients and guests of the Calvert Jail speaks volumes about possible suspects in the murder of Rose Marie Long.

Police say that Long, 71, of 241 Stafford Road, Prince Frederick, Md., was pronounced dead in her home.   Ms. Long’s body has been taken to the Office of the Chief Medical Examiner for an autopsy to determine the cause and manner of death – which has already been labeled a homicide by police due to evidence surrounding the condition of her body and her ransacked home.

Shortly before 10:30 a.m. on June 8, 2020, troopers at the Prince Frederick Barrack responded to a call from a relative of the victim who had gone to visit her.  When troopers arrived at the home, they found the victim deceased in the living room.  Troopers observed items in the home in disarray and found evidence of an assault.

Maryland State Police Homicide Unit investigators responded to continue the investigation.  The preliminary investigation indicates the victim, who lived alone, was assaulted and killed in her home sometime within the past two days.  Investigators determined the victim’s car was missing and may have been taken by the suspect.  The victim’s car is identified as a maroon 2000 Toyota Camry, MD registration AKE947.  A lookout has been issued for the vehicle.  Anyone who may see this car is urged to contact police immediately.

State Police crime scene technicians continue to process the scene and homicide investigators are continuing a neighborhood canvas to identify anyone who may have seen anything suspicious or have any information regarding a suspect in this crime.  Assistance is being provided by investigators from the State Police Criminal Enforcement Division and troopers from the Prince Frederick Barrack.


Anyone with information about this apparent murder is urged to contact Maryland State Police immediately at 410-535-1400.  Callers may remain anonymous.

Calvert County Behavioral Health describes on their website the following services:  behavioral health assessments, individual/group/family counseling, Outpatient Mental Health Clinic, substance related education treatment, ASAM substance abuse Level 1 Outpatient Treatment, ASAM substance abuse Level 2.1 Intensive Outpatient Treatment, medication evaluations, medication management, medication-assisted treatment, school-based behavioral health, jail-based behavioral health, court diversion program, shelter plus-care housing, substance related prevention services, care coordination, Project Phoenix, Recovery Corner, Healthy Beginnings (Pregnant Women’s Group), and more.

The Calvert County Jail is the mecca for the criminally inclined who desire three hots and a cot.

The clinic and the jail are within walking distance of the murder victim’s home and perhaps explains how someone dropped off at the clinic might have murdered the victim and then needed to steal her car to flee the area.

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