Unusual lights that were spotted over the Pacific Ocean Monday night - and caused quite a stir on social media - have now been identified.
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The U.S. Coast Guard said the lights were flares fired from a ship off the coast of San Diego.
The lights were spotted from multiple neighborhoods around 9 p.m. Monday.
Eyewitness photos captured the then-mysterious phenomena over the ocean, and videos of the lights were all over social media. The speculation ranged from planes and space junk to, well, something perhaps sinister or even extraterrestrial.
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Mysterious lights spotted in sky near San Diego
Mysterious glowing lights spotted in San Diego sky