A woman attacked and killed by an alligator while snorkeling in a secluded recreation area died from drowning and multiple blunt-force injuries, according to an autopsy.

Annemarie Campbell, 23, of Paris, Tenn., suffered lacerations on her head, neck and upper torso and suffered multiple rib fractures, Associate Medical Examiner K. Podjaski said Tuesday.

Those with Campbell found her body inside the alligator near Lake George on Sunday and beat the animal until it released the body.

Officials are still trying to locate the reptile they believe to be between 7-feet and 9-feet long.

The Florida Fish and Wildlife Conservation Commission planned to send a Cessna plane over the area where the attack took place. A spotter in the plane will relay anything noteworthy to trappers in a boat.

Campbell's body was one of two found Sunday that authorities said was killed by alligators.

The body of Judy W. Cooper, 43, of Dunedin, was found in a canal 20 miles north of St. Petersburg.

In Sunrise, the body of Yovy Suarez Jimenez, 28, was found May 6. She was attacked by an alligator while jogging near a canal, authorities said.