Police are still trying to identify three people who robbed a San Bruno 7-Eleven store at gunpoint on Sunday evening.

Officers responded to a report of a robbery at the convenience store, located at 2020 Rollingwood Drive, at about 5:30 p.m., San Bruno police Cmdr. Matt Campi said.

Witnesses told police that three males armed with semiautomatic handguns entered the store and ordered customers and employees to get down on the ground.

The suspects stole merchandise and cash from the business and took property from customers, according to police. They then fled on foot.

All three were wearing black hoodies, blue jeans and ski masks, according to police.

One suspect had a slender build and stood about 5 feet 8 inches tall, police said.

A second suspect who was wearing a white T-shirt under his hoodie was described as heavyset, about 5 feet 2 inches tall with black braided hair.

The third robber was about 5 feet 9 inches tall with a slender build.

Anyone with information about the robbery is urged to contact San Bruno Police Department investigative services at (650) 616-7100.