Police investigating the deadly stabbing of a man at the Woodley Park Metro Station in northwest Washington are now looking for at least three more people who may have been involved.
Metro security cameras captured the Nov. 17 attack on Olijawon Griffin, detectives said.
Griffin was killed after confronting a group of teens that he believed robbed him of a $400 Helly Hansen jacket, his iPhone and a ballcap.
Monday, police testified during a preliminary hearing in the case that they're searching for at least three people who were captured on the security camera footage. They have not been identified.
Nine teens have already been charged in the case, with five charged as adults and one, Chavez Myers, charged with murder.