57-year-old Thomas Pickett of Rockwall, Texas died while diving near Key Largo, Florida in water about 20 feet deep at Elbow Reef yesterday.

His dive partner says he did not appear to have trouble during the dive, but other witnesses say Pickett surfaced and began to have trouble.

Authorities say he was pulled into the boat and was unconscious. He stopped breathing and crew on board the boat began to perform CPR. Paramedics met the boat at shore and transported Pickett to a hospital where he was pronounced dead.

An autopsy will be done to determine the cause of his death.