The U.S. Navy said a seaman passed away over the weekend while serving on an aircraft carrier in Southern California.

The USS Carl Vinson was parked at Naval Air Station North Island in San Diego on Sunday morning when Information Systems Technician 2nd Class Darren Collins, 22, of Broken Arrow, Oklahoma, passed away, according to the Navy.

The Navy Region Southwest Federal Fire Department went to the scene and pronounced the sailor dead, NBC San Diego reported.

The cause of his passing is currently under investigation. There were no signs of suicide or malicious behavior, according to the Navy.

The Navy said that Collins joined the Navy in 2019 and attended Information Warfare Training in Pensacola, Florida, before reporting aboard the Carl Vinson in October 2020.

“My deepest condolences go out to the Collins family in this time of tragic loss,” the USS Carl Vinson’s commanding officer, Capt. P. Scott Miller said in a statement. “As shipmates, we grieve the untimely passing of a talented young man.”