SAN DIEGO—An apparent non-injury shooting sent shoppers ducking for cover June 2 in a parking lot at a busy retail center just north of the U.S.-Mexico border.

The gunfire erupted about 11:15 a.m. in front of a Dollar Tree store at San Ysidro Village, 4330 Camino De La Plaza, according to the San Diego Police Department (SDPD).

Patrol officers searching the area found no shooting victims, SDPD Sgt. Dave Yu said.

Video footage posted online by OnSceneTV showed a spent firearm cartridge on the pavement in the lot.

No suspects have been arrested in connection with the shooting as of early afternoon, Yu said.