Tuesday, June 4, 2013
Khadar Hussein, 19, died after he was shot in the head in southeast London, on May 8.
Police are now looking for Trai Williamson, 19, who was last seen on the day of the murder.
He is known to spend time in southeast London, particularly in Penge and Anerley, but could be elsewhere.
He is black, around 5ft 9in, and is slim with short hair.