On Thursday, January 23, 2025, Detectives from the St. Mary’s County Sheriff’s Office Criminal Investigations Division, with assistance from the Calvert County Sheriff’s Office Special Operations Team, executed a search and seizure warrant on a residence located in the 18000 block of Matthews Drive in Lexington Park, recovering unregistered firearms, a machine gun conversion device and a bag containing suspected cocaine.

 

At the scene, detectives located a .40 caliber semiautomatic handgun, a loaded magazine, a Glock 10MM slide with a machine gun conversion device, an empty 10MM gun magazine, a 10MM polymer gun frame, and a loaded 33-round capacity gun magazine for a 10MM firearm and suspected CDS. A search of law enforcement databases revealed the weapons were unregistered.

 

Dylan Lane Sullivan, 21, of Lexington Park, was taken into custody and has been charged with possessing a machine gun for an aggressive and offensive purpose, possession of a rapid-fire trigger activator, possessing a detachable magazine with a capacity of more than 10 rounds, CDS possession – not cannabis and machine gun failure to keep a register.

 

Sullivan was transported to the Detention and Rehabilitation Center in Leonardtown to await a bond hearing.