The body of a San Diego State student was found Friday afternoon in Lake Murray, a day after the student disappeared there.
The body was found in 60-foot deep water with one-foot visibility, officials said.
For the first time, search teams were using unmanned controlled sonar devices as they looked for the student who disappeared at Lake Murray in La Mesa on Thursday morning.
The search began after park rangers found a backpack and a cellphone next to the lake shore, officials said.
Search-and-rescue teams used underwater high-tech devices, called Autonomous Underwater Vehicles, owned by local company Orca Maritime. They sent back sonar images of what is under the water.
One of those vehicles found the student's body, so crews sent in a bomb squad's robotic device to attach a line to it. That line guided divers to the student.
The sonar units send back images of unusual shadows that could detect evidence of the missing student.
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Rescue teams from at least six different county agencies helped with the search since Thursday morning.
Police told NBC 7 the body does not appear to be a part of a crime scene.
