Shelter-in-place in Gaithersburg, Maryland as gunman on the loose after shooting at police responding to parking hazard. Gaithersburg police responded to a report of a vehicle blocking the roadway near 392 N Summit Ave at approximately 3pm. As officers were responding to the scene, shots were fired at them from a higher elevated location. A shelter-in-place is in order and everyone in the area of the 390 block of N Summit Ave / Girard St. is asked to keep out of the area. Police are actively searching for suspect(s).