A 20-year-old man was arrested and charged in the fatal shooting of a teenager outside a Georgetown sports bar early yesterday in what police say is the first homicide in the neighborhood in more than a year.

Bernard Bryant Jr., of the 2700 block of Rose Valley Drive in Fort Washington, was charged with murder while armed in the 2 a.m. incident at the Sports Fan Club in the 3200 block of M Street NW. Bryant is scheduled to be arraigned today in D.C. Superior Court, said 2nd District Sgt. Michael Farish.

Tyreen Jay Chaney, 19, of Springfield, died at Georgetown University Hospital less than an hour after he was shot, Farish said. Police said the killing stemmed from an argument over a woman.

The last homicide in Georgetown occurred in August 1998 when Christine M. Mirzayan, a 28-year-old biologist, was attacked as she walked home from a barbecue. The neighborhood is safe overall, police said, but the Sports Fan Club is a rough spot.

"It was not uncommon for trouble to stem from within the club," Farish said. This is the third fatal shooting in the 2nd Police District this year, he added. Two occurred outside bars. The other bar shooting took place in June outside the Hung Jury Pub at 1800 H St. NW.

The fight at the Sports Fan Club began after the bar was closed, Farish said. A man had approached a woman and two groups began fighting about it, Farish said. Police believe that neither Chaney nor Bryant was the one who approached the woman but that they were members of the groups that began to scuffle outside the bar.

"The fistfight then escalated to a gunfight," Farish said. Bryant allegedly produced a gun and opened fire during the melee. Bryant then ran but was grabbed by people who held him for police, Farish said.

Two other people were charged yesterday with aggravated assault in the case. Another was charged with disorderly conduct. Police did not release their names because they are witnesses, Farish said.

Chaney's family declined to comment, as did Bryant's family.

Several Georgetown residents said the bar is the site of violence and constant fighting after closing time. They recounted stories of walking past men sprawled out on the sidewalk after being beaten. One resident said he once saw two women wrestling and smashing each other's head into a lamppost.

"I think this place should be closed down," said Tom Arundel, 27, who lives around the corner from the bar. "I'm not a cranky old man. I like to go out in Georgetown and have a good time. But this is the one bar I wouldn't step foot in."

An employee at the bar said the crowd usually is made up of college students and rarely gets violent.

"It's usually a fun dance club," the employee said. "It seems like everyone knows everyone. We usually don't have a problem."

Researcher Bobbye Pratt contributed to this report.