Police have arrested one of the two men accused of assaulting a retired city correction officer on a subway train Tuesday night, an assault that later led to a deadly shooting.
Joscelyn Evering, 28, is charged with second-degree assault, third-degree assault and menacing.
According to authorities, Evering and 32-year-old Gilbert Drogheo confronted 69-year-old Will Groomes on a Brooklyn-bound train Tuesday evening.
Witnesses say the two men appeared to be drunk.
The argument turned physical and spilled off the train into the Borough Hall subway station.
The scuffle eventually reached the station's mezzanine level, where police say Groomes, a retired city correction officer, shot Drogheo shortly before 7 p.m.
Drogheo was shot in the chest and died.
On Wednesday afternoon, Groomes was questioned by police at a precinct in Williamsburg. He went to the precinct voluntarily with his lawyer, and it is unclear if he will face any charges.
Groomes' neighbor said he has been a mentor.
"If he felt that he was threatened at the time, yes, by all means protect yourself," she said. "He's a really good guy. I just hope. Maybe the young man said something to him. You never know. "
Union officials say Groomes was registered to carry a 9-millimeter gun.
Sources say a grand jury could determine whether Groomes faces charges.