Did you see those mysterious lights southwest of San Diego on Tuesday night?

A viewer sent us several photos he took, capturing a string of multicolored lights in the sky above San Diego. The viewer, Larry Fox, said the lights that appeared to be red, blue and green kept flashing and changing colors from his vantage point in Del Cerro.

"It looked like a strobe light," he said.

Fox said he was out in his backyard when he saw the strange lights southwest of the Coronado Bridge. He didn't think it was a plane or even a drone because it was stationary.

"It was a series of flashing lights," he said. "If it was a plane, it would have moved."

A NBC 7 reporter and photographer also spotted the strange lights from San Ysidro as they were covering an unrelated story on Tuesday night.

A number of folks also called us here at NBC 7, reporting the same thing.

Later, an NBC 7 news photographer returned to the same location during daylight hours and noticed the lights were coming from a mountaintop where there were TV antennas.