Deputies are seeking a burglar or burglars who made off with more than 100 handguns in an overnight break-in at a self storage facility just outside of Sylmar, authorities said Saturday.

The crime took place sometime between Friday night and Saturday morning, when the burglary was discovered at Storage Etc., 12087 Lopez Canyon Road, Los Angeles County sheriff’s Lt. DiMarkus Smith said.

The facility notified the person renting the unit that his lock had apparently been tampered with. He inspected his unit and determined that more than 100 guns, believed to be primarily handguns, were missing, the lieutenant said. The exact loss was not determined, as the victim was yet to complete an inventory of the stolen items.

No description of the burglar or burglars was available.

Anyone with information can reach the sheriff’s Crescenta Valley Station at 818-248-3464. Tips may also be submitted anonymously to L.A. Regional Crime Stoppers at 800-222-8477.