REDWOOD CITY – Authorities were searching for three men who allegedly tried to rob a jewelry store in unincorporated Redwood City before someone at the store fired a shot from a gun, scaring the trio away.

At 5:50 p.m. Monday, deputies were called to Plaza Jewelers at 3303 Middlefield Road for a report of an armed robbery, said Sgt. Jesse Gurkovic of the San Mateo County Sheriff’s Office.

Deputies learned that three men had entered the business, displayed firearms and demanded merchandise, Gurkovic said.

A store owner pulled out a firearm and shot one round, causing the three men to take off running, according to Detective Javier Acosta. No injuries were reported and no arrests were made.

The investigation was ongoing and police were working on identifying the suspects.

Rosalba Farias, owner of the store, said her husband retrieved a gun and fired one round, hitting the front door of the store. Two of the men had guns and the other was holding a piece of metal, she said.

“I was in the back counter helping a customer when I heard the noise and I just froze,” she said.