Some minutes after the police arrived on the scene, a maroon Jetta appeared at the intersection of Brattle and JFK Streets and was immediately attacked by some young men.

"There was a car with two girls in it and somehow this guy wound up kicking in the windows," said James Akula, a 17 year-old Cambridge resident who was standing in the Pit during the mayhem.

Harold Murphy, superintendent of the Cambridge Police Department, said he believed the car incident was "coincidental rather than planned."

"I think someone was pissed because they couldn't get through the Square. It's nothing new," he said.

Petrulli, however, said the cops searched both the young women and the car.

Detective Richard Estes of Harvard Police apprehended one suspect near the Apley Court complex on Plympton St., according to the police desk.

Other suspects were rounded up by the Cambridge Police, who were the first called to the scene.

The police have already accounted for two of the many bullets reportedly fired. One shattered the plate-glass window above the BayBank main entrance on Mass. Ave. Another was found in the mail-box on the side walk outside of BayBank.

Singh, who was in BayBank when the shooting began, said she was so terrified by the experience that it seemed unreal.

"The people in BayBank asked me if it was all for that movie," she said, alluding to the recent filming of the film "With Honors" on the Harvard campus.

"It was just a shocking thing," said Stone.

Officials at the Cambridge Police station said late last night they were unable to comment on the shooting.

Vikram A. Kumar and Rajath Shourie contributed to the reporting of this story.