Fourth suspect faces charges in T station assault on disabled man; police seek fifth

A fourth suspect in the beating on Monday of a mentally disabled man on the Downtown Crossing Station Orange Line platform turned himself in to MBTA Transit Police detectives today, and authorities are searching for a fifth person, officials said.

Germial Johnson, a 28-year-old homeless man, surrendered at about 3 p.m. in Dorchester, according to MBTA spokesman Joe Pesaturo. Johnson is to be arraigned on assault charges Thursday, Pesaturo said.

Also this afternoon, transit police announced that an arrest warrant has been issued for a fifth suspect, Ivan Bacai, 23, of Malden. Police urged anyone with information on his whereabouts to contact them at 617-222-1212, or to text 873873.

Advertisement - Continue Reading Below

Members of the public can also contact police via the MBTA See Say app for their phones.

Earlier today, a 29-year-old Jamaica Plain woman was arraigned on charges that she participated in the attack, which occured shortly before 12:37 a.m. on Monday, prosecutors said.

Maryanne Hamilton had her bail on an unrelated case in Brookline revoked. A judge set bail on the subway assault charges at $4,500 cash and ordered her to stay away from the victim and MBTA property. Her next court date is Sept. 25, Suffolk District Attorney Daniel F. Conley’s office said in a statement.

Hamilton was arrested Tuesday when she was spotted in the courthouse hallway after the arraignment of two other suspects in the beating, Karen Akiba, 22, of Cambridge, and Bryon Lashus, 32, of Watertown.

Hamilton, Akiba, and Lashus all face charges of assault and battery on a disabled person and assault and battery with a dangerous weapon.