COLUMBIA, Md. — As the search continues for a Maryland teen for his alleged role in a deadly shooting in Columbia Mall, the U.S. Marshals are partnering with Howard County Police to bolster efforts .
The shooting claimed the life of 17-year-old Angelo Little.
Police believe the shooting was targeted, but have not specified why.
Before the shooting, the masked gunman, who police believe to be William Thomas Marshall III, was seen at a table in the food court with his head down.
Investigators think he was lying in wait, because as Little heads to the bathroom, the suspect gets up and follows him.
RELATED: New video emerges of alleged Columbia mall killer, $7.5k reward offered
When Little comes out, he's shot to death from behind. The suspect is then seen running for the mall exits.
Video of alleged Columbia Mall shooter
Marshall, aka Junior, has been charged with first degree murder.
The U.S. Marshals Service is offering a reward of up to $20,000 for information that leads to Marshall’s arrest, in addition to the $10,000 offered by Howard County Police.
If you have any information on Marshall's whereabouts, contact the U.S. Marshals Service at 1-877-WANTED2.
READ MORE: High school student wanted for Columbia Mall murder remains on the loose
