A 20-year-old man has died after lightning struck 14 people at Venice Beach in Los Angeles and Catalina Island.
Twelve other people were injured on the beach, with one still in a critical condition in hospital.
A 57-year-old man was also hit on a golf course on Catalina Island.
A witness earlier described seeing a "big flash of light and a boom" when the lightning struck.
More top news
Muhiddin Mire cut the throat of a stranger at an east London tube station "in revenge for the fight against IS", a court heard.
The significant development came after a forensic re-examination of a palm print left on a getaway vehicle.
Carla Lane was once one of the UK's highest paid screenwriters.