MARTINEZ -- An alleged Richmond gang member has been charged with murder in the fatal shooting of a 16-year-old boy at an AC Transit bus stop in Richmond in 2010, a prosecutor said Friday.

Akeem Rouse had just finished a new student orientation at Gompers High School in Richmond and was waiting for a ride from his mother at a bus stop on West Macdonald Avenue at First Street on Aug. 18, 2010, when a gunman shot him several times.

Darious Lewis, 21, was identified as a suspect before being linked to the crime by DNA recovered from the gun suspected to have killed Rouse, as well as clothing dumped in the area, prosecutor Mary Knox said.

While no motive has been determined, investigators believe Lewis killed for the benefit of his Richmond street gang.

Witnesses described Lewis high-fiving another gang member after the shooting, Knox said.

Lewis was 17 at the time of the shooting but is being prosecuted as an adult. He was arrested in Solano County on Dec. 26 and is being jailed in lieu of $2.5 million bail.

Contact Malaika Fraley at 925-234-1684. Follow her at Twitter.com/malaikafraley.