REDWOOD CITY -- Just a few weeks after a couple met online and started dating they allegedly robbed two people at gunpoint in San Mateo.

Prosecutors say David Charles Cooper, 18, carried out the robberies while his girlfriend Keyana Deseriee McLish, 19, drove the getaway car: a red Honda Accord. They were arrested last month and have pleaded not guilty to robbery and both are in San Mateo County jail in lieu of $50,000 bail.

When San Mateo police pulled over the Accord on March 20 Redwood City resident McLish was behind the wheel and Cooper, of San Pablo, was in the passenger seat with a shotgun stuffed into his pants, San Mateo County chief deputy district attorney Karen Guidotti said.

Detectives had been looking for the suspects in two holdups, including one in which the victim was chased as he walked home to his apartment. The robber caught up to him, rifled through his pockets and took his cell phone as well as a wallet. The suspect escaped in a red car.

Six days later a robber put a shotgun to the head of a man walking on San Mateo Drive and took his wallet. The victim remembered the red car and the distinctive hoop earrings of the woman at the wheel. Prosecutors say McLish was wearings similar earrings when she was arrested.

Attorneys for Cooper and McLish pushed Thursday to be able to show the alleged victims a suspect lineup, Guidotti said. They are due back in Judge Marta Diaz's San Mateo County Superior courtroom April 19 for a hearing on the matter.

Contact Joshua Melvin at 650-348-4335. Follow him at Twitter.com/melvinreport.