Man accused of fatally shooting teen in Baltimore County had a mental illness, documents say

A 22-year-old man is being held without bond after being arrested for the murder of a 17-year-old in Baltimore County.

Marquis Washington appeared in a Towson courtroom on Wednesday afternoon.

Officers responded around 5:30 a.m. on Tuesday to a reported shooting in the 3800 block of McDowell Lane in Baltimore. The teen was pronounced dead at the scene after police found him suffering from an apparent gunshot wound.

Documents: Mother reported her son with a mental illness

Charging documents reveal a second call came in for a shooting at the same location. The caller stated her son, 22-year-old Marquis Washington, shot someone.

Documents say Washington left the scene, and officers found the victim, a 17-year-old boy, shot in a bedroom on a bunkbed.

Detectives found a gun in a backpack inside the home and found three fired cartridge casings in the bedroom. Officers later located Washington and arrested him.

Investigators interviewed multiple people, including Washington and two juvenile children. Washington's mother told police she woke up to banging on the door and encountered Washington, who told her he shot the boy.

She said the 17-year-old victim had stayed the night to spend time with her other son.

She also added Washington has been diagnosed with mental illness and did not know there was a gun in the house.

Documents say Washington would not talk about the shooting itself or where the gun came from but stated voices in his head had gotten to him and he snapped.

Washington is expected back in court June 12.