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Oakland police evidence technician trainee Jenena Ellis removes evidence from the A-A Jewelry & Loan pawn shop on Telegraph Avenue in Oakland, Calif., on Thursday, Feb. 7, 2013. Thieves smashed a case with a crow bar and made off with jewelry. Employee Devin Laughren was punched in the lip and suffered several scrapes, but otherwise no one was injured in the heist. (Jane Tyska/The Oakland Tribune)

OAKLAND -- Three masked gunmen took over a North Oakland pawn shop Thursday morning, ordering employees to the floor at gunpoint and stealing cash, police said.

The victims were not injured.

Police said the robbery happened about 9:30 a.m. at the A-A Jewelry and Loan, 6416 Telegraph Ave., just a few blocks from the Oakland-Berkeley border.

Three men, two of whom were armed with guns, who ordered at least four employees to the ground while they broke a jewelry display case with a crowbar and stole money from a cash register, police said.

One employee struggled with the suspect who had the money and a bag of jewelry. Police said the suspect dropped the bag of jewelry but got away with an undisclosed amount of cash.

The store was gated Thursday afternoon and no one was available for comment. The family-owned business has been in operation since the 1960s and also has a store in Concord, according to the company website.

Anyone with information about the crime should call police at 510-238-3326. There is a reward of up to $2,500 for information leading to the three suspects.

Reach Harry Harris at hharris@bayareanewsgroup.com. Reach Kristin J. Bender at kbender@bayareanewsgroup.com. Follow her at Twitter.com/kjbender.