FREMONT -- A masked man, with what police said appeared to be a large assault rifle, held up a Fremont bank Monday afternoon, ordering customers to the ground.

A witness from outside the Wells Fargo Bank at 40982 Fremont Blvd. called police at about 5 p.m. to report the robbery, said police spokeswoman Geneva Bosques.

Inside the bank, the armed suspect, who wore latex gloves and a dark blue and white bandana over his face, pointed a large gun and ordered everyone to the ground and demanded money, Bosques said. He got away with an undisclosed amount of cash.

"He concealed the components of the weapon that would verify it was a replica but when we found it (the gun) later it was determined to be a replica," Bosques said.

Witnesses described the suspect as a black man in his 20s, about 5 feet 7 inches tall with a medium build wearing a dark-colored shirt and dark-colored pants.

No one was injured.

When officers arrived at the scene, they learned the suspect had already fled on foot, Bosques said.

Shortly after, Bosques said, an officer spoke to another witness outside the bank who pointed police to the suspect's discarded latex gloves and an empty "loot bag" on the ground.

Officers search the area and also located a discarded "M4" Crossman Rifle in the drainage ditch behind Coach's Sports Bar at 40968 Fremont Blvd.

Anyone with information about this incident can call police at 510-790-6800 or at the anonymous tip line at 510-494-4856

Contact Natalie Neysa Alund at 510-293-2469. Follow her at Twitter.com/nataliealund.