CCTV video captured possible suspects in a brazen jewelry theft and the frantic chase that followed.

The theft Wednesday in San Francisco’s Union Square happened in a matter of minutes.

The clerk at Natalie’s Antiques on Geary Street declined to give her name, but she told KTVU that two men entered the store Wednesday afternoon.

When they exited, a display case filled with the store’s most expensive items went missing, she said.

The CCTV tape showed the first suspect outside. Moments later, the suspect apparently turned his head in alarm because the store clerk screamed at him to stop. The clerk then ran and tried tackling him. The CCTV video was recorded by a camera outside Lefty O’Doul’s restaurant, two storefronts down from the jewelry store.

The same camera last July captured a New Jersey man stealing a $275,000 Picasso sketch from a nearby art gallery.

Lefty O’Doul’s manager John Fair said that police will often come to him to ask if the CCTV camera caught other crimes, even little thefts, such as stolen bicycles.

Union Square merchants are now talking about creating a network of CCTV cameras to track crime.