An 18-year-old Germantown man has been charged with attempted murder for allegedly striking another man with a small souvenir baseball bat in a fight that left the victim in critical condition and unlikely to survive, according to Montgomery County police and court documents.

Quatrell O. Adedeji attacked Stephone Wiggins, 23, about 9:30 p.m. Friday as crowds of people were leaving the Seneca Valley-Northwest High School football game, which was played at Seneca Valley, police said.

Adedeji, accompanied by several friends, was near the intersection of Wisteria and Circle Gate drives when he struck Wiggins in the head, knocking him unconscious, police said. He then kicked the victim's chest and left, police said.

A witness described Adedeji to police, and officers in the area -- including officer Dan Hunt, who is assigned to Northwest -- arrested him after a brief foot chase, police said.

Wiggins, who also is from Germantown, was taken to a hospital with a severe brain injury, police said. He was placed on life support and is not expected to survive, according to documents filed by police in District Court.

It was not clear what triggered the violence, although the conflict had been going on for some time, said officer Derek Baliles, a police spokesman.

Police and Seneca Valley's principal said yesterday that although the incident occurred near the site of the football game and the defendant is a 2004 graduate of Seneca Valley, there was no known connection between the fight and school-related activities. Neither of the young men attended the game, she said.

"Even though it's not your kids, your students, it's still upsetting," Principal Suzanne Maxey said.

Adedeji, of the 19500 block of Fetlock Drive, was charged with second-degree attempted murder and marijuana possession. He was being held in lieu of $1 million.

Quatrell O. Adedeji is charged with second-degree attempted murder.