Two teenagers are stabbed at Back Bay T station at rush hour

Two teenagers were stabbed at the Back Bay MBTA Station just after rush hour last night, temporarily closing the station and forcing hundreds of commuters to make their way home or wait for shuttle buses. It was the second stabbing in less than three weeks at the station.

The victims, whom Boston police described as males in their late teens, were stabbed multiple times during an altercation that spilled from a train onto the Orange line platform.

One of the victims was in critical condition at Boston Medical Center , and the other was being treated at Brigham and Women's Hospital last night for injuries that were not considered life-threatening, police said.

Authorities were searching for a suspect.

Commuters witnessed a bloody scene as they were evacuated from an outbound train just moments after the stabbing.

"The conductor said, 'We need you to evacuate the train; there's a medical emergency,' " said Hilda Betancourt , who was on an Orange line train that pulled into the station at about the same time as the 7:50 p.m. stabbing.

"We got out of the train and saw a young boy lying on the ground. . . . He was holding his stomach."

Other witnesses said one of the victims collapsed on the outbound platform and lay there bleeding, holding his stomach as emergency personnel tended to him.

"There was a lot of blood," said Deila Vieira, who was with Betancourt and was trying to make her way home from work last night.

Stranded commuters waited outside the station's entrances for shuttle buses that quickly filled with bundled -up passengers.

Orange Line traffic was suspended for about two hours between Massachusetts Avenue and New England Medical Center stations, and shuttle buses transported commuters between the stops.

Last night's stabbing was the second at the station in less than three weeks.

A 17-year-old West Roxbury man was attacked and stabbed nine times Feb. 19, police said, by three Boston high school students who pleaded not guilty during their arraignments last week.

The suspects were identified with the help of the T's surveillance camera system, police said.

Officials said they did not know last night if the stabbings were caught on camera.

After last night's stabbing, Vieira said officials need to do more to protect the public. "The security here is weak; they definitely need to do something about this," Vieira said. "You never know what's going to happen."