A machine gun was spotted in the water at the Children's Pool in La Jolla Tuesday afternoon.
Police say a tourist stumbled upon the unloaded MAC-10 while walking along the beach Tuesday at around noon.
“They saw it from the wall in about 2 feet of water and called a lifeguard down to look at it,” San Diego Police Det. Gary Hassen told our media partner, the La Jolla Light. “It turned out to be a MAC-10 fully automatic machine pistol.”
An investigator also found 44 bullets of different calibers in the water near the gun, Hassen said.
Authorities are now checking the serial number to determine the owner.
The gun is an open-bolt fully automatic gun, which is illegal to own in California, according to the California Department of Justice.
An earlier version of this report incorrectly identified the type of gun found in the water.