A suspect believed to be responsible for separate shooting incidents on the ICC and near the NSA at Fort Meade is in custody.
The accused man has no terror-related ties, a federal official told NBC's Pete Williams. The suspect is also suspected in several other shootings in the D.C.-Baltimore area over the last two weeks.
Charges are pending against Hong Young of Beltsville, sources tell NBC Washington.
The suspect suffers from mental health issues, Williams reported.
The suspect's arrest follows several shooting incidents over the last two weeks. In the earliest case, a man was grazed by a bullet outside a shopping center in Hanover, Maryland on Feb. 24. In the wake of the shooting, Anne Arundel County Police released surveillance video of a Lincoln Towncar as a possible suspect vehicle.
Then, on Monday, two shootings were reported: one at a Walmart in Laurel and another near an AMC Theater in Columbia.
Around 3 p.m. Tuesday, a car with two men inside was struck by bullets on the Maryland Intercounty Connector (ICC) near Interstate 95. The shots were likely fired from nearby woods. One man was injured by shattered glass. He was taken to a local hospital and has since been released. The other man found a bullet fragment in his clothes, but was not hurt.
About two hours after the ICC shooting incident, U.S. Park Police investigated a report of shots fired near the headquarters of the National Security Agency (NSA) in Fort Meade.