Police are asking for the public’s help locating a suspect who robbed a woman in the parking lot of a Riverhead store on Monday night.

Authorities say the victim was outside of the Marshalls on Old Country Road around 10 p.m. when a man forced her to the ground between two cars.

He then allegedly took $500 from her pocket and attempted to take her wallet.

Police say a witness verbally intervened, causing the suspect to flee toward County Road 58.

Anyone with information is urged to call police.