STAMFORD, Conn. (AP) _ A young man who helped beat a teen-ager into a coma, yelling, ``Remember who did this to you!'' sobbed Friday after accepting a plea bargain that will put him in prison for 15 years.

Washington Alvarez, 20, sniffled and wiped his eyes with his sleeve while a prosecutor described how he and three other youths punched, kicked and beat then-15-year-old Mathew Kosbob in a school parking lot on July 28, 1995.

Kosbob, 17, received a brain injury and remains in a vegetative state.

Alvarez broke down, rested his head on the defense table and wept after Superior Court Judge Harold Dean accepted his guilty plea to first-degree assault, kidnapping and conspiracy charges.

Kosbob's parents said they were angry, and that Alvarez could have faced up to 65 years if he had gone to trial. ``He has essentially gotten away with murder. He murdered Mathew,'' said Maureen Kosbob.

No trial dates have been set yet for the three other youths charged in the beating.