A search is underway to find several people who were reportedly on an aircraft that went down along the San Diego coast on Sunday.

Around 12:45 p.m. PDT, the Joint Harbor Operations Center in San Diego received an initial report about a twin-engine Cessna 414 with six people onboard that crashed about three miles west of Point Loma.

Flight Radar 24, which tracks air traffic, showed that the plane was headed to Phoenix Sky Harbor International Airport.

According to the Federal Aviation Administration, the plane is owned by Optimal Health Systems, a company based in Pima, Arizona.

Rescue crews, including the Coast Guard, Customs & Border Protection Air & Marine Operations crews, San Diego Harbor Police boat crews and San Diego lifeguards, are involved in the search.

The Coast Guard says the water below the debris field is around 200 feet deep.

The National Transportation Safety Board is investigating the cause of the crash.