Nine juveniles were arrested Saturday in a fatal attack on an 18-year-old Maryland man at the Woodley Park Metro station early Saturday morning, police announced.

Olijawan Griffin, of Olney, Md., had been robbed earlier in the evening in Adams Morgan in the area of the 1800 block of Columbia Road NW. After meeting friends he made his way to the Woodley Park Metro station, where at approximately 1:17 a.m. he ran into the same teens who had robbed him earlier that night, according to Lt. Robert Alder.

The teens attacked Griffin for a second time and robbed and assaulted another victim. Griffin was stabbed in the torso during the attack, and died later at a local hospital.

The other victim was in stable condition as of Saturday evening.

Nine juvenile males were arrested for the attack, all from Maryland and between the ages of 15 and 17, Alder said. One, a 17-year-old, was charged with second-degree murder and may be charged as an adult. Another teen was charged with aggravated assault and robbery. The other seven juveniles were charged with aggravated assault.

Metro Transit Police were able to respond to the station within minutes of the altercation, according to Dep. Chief Ron Pavlik. Metro keeps extra police near the Adams Morgan area on Saturday nights, he said.

Exits to the station were sealed immediately after the attack and no trains were allowed to travel through the station, he said.

Between 10 to 20 customers were inside the station at the time of the attack, according to Pavlik.

It was unclear what the relationship of the assailants was, but Alder said police believe they all knew one another.