PLEASANTON (CBS SF) — Police in Pleasanton on Tuesday afternoon investigated shots fired in a parking lot at the Stoneridge Shopping Center.

The department tweeted just before 3 p.m. that there was police activity near the shopping center located at 1000 Stoneridge Mall Road.

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Police later clarified that they received reports of shots fired in the area at around 2:21 p.m.

Arriving officers went to the shopping center’s second-story “E” parking lot where they located two vehicles with bullet holes along with several shell casings.

A short time later, officers received information that a subject entered the mall before fleeing through another exit. Officers conducted a search of the shopping center and the surrounding area, but were unable to locate any involved subjects.

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Police cordoned off an area of a second story parking lot at the mall during the investigation, according to KPIX reporter Juliette Goodrich, who was at the scene.

Officers cleared the parking lot area while searching for a suspect. No injuries were reported.

Pleasanton police officers were still at the scene as of early Tuesday evening and the investigation is ongoing. Stoneridge Shopping Center remained open for business.

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Anyone who witnessed the incident or may have additional information regarding the case is asked to call the Pleasanton Police Department at (925) 931-5100.