The mysterious lights spotted last week south of San Diego are a mystery no more.

And the source isn't a flying saucer that's going to whisk you away.

An NBC 7 news photographer believes the strange blinking lights he captured in a video last week were coming from TV news antennas in Mexico, about 15 miles from the U.S. border.

Reports of the mysterious lights generated attention on a number of national and international news sites, such as Buzzfeed and The Huffington Post.

The photographer was in San Ysidro last Tuesday night covering an unrelated story when he noticed the mysterious lights. He returned during daylight hours and noticed the TV antennas on the mountaintop at the same place he spotted the lights.

He believes the foggy conditions made the lights coming from the antennas more striking than other nights – and why so many people who saw them were so baffled.

A number of residents called NBC 7 to report the mysterious lights and a NBC 7 viewer also provided photos. Those who saw the lights all said they appeared to be south of downtown San Diego.