STONY BROOK - Police are investigating an armed robbery at the Jamba Juice in Stony Brook.

According to police, a man with a gun walked into the juice bar on Nesconset Highway and Stony Brook Road around 5:30 p.m. last night.

Police have not released a description of the robber or how much cash he took.

So far no arrests have been made.

There are no reports of injuries during the holdup.