The circumstances surrounding the death last weekend of a 12-year-old girl who was struck by a personal watercraft while paddle-boarding in Mission Bay remained under investigation Tuesday.

SAN DIEGO — A 19-year-old man has been charged in connection with the death of 12-year-old girl who was struck by a personal watercraft as she was paddle boarding in Mission Bay last summer.

Lifeguards are cracking down on illegal jet ski rentals following the death of a 12-year-old girl who was killed while paddle boarding in Mission Bay.