The US Pacific Fleet says two US Navy aircraft crashed in the South China Sea on Sunday.

The Pacific Fleet says an MH-60 helicopter went down at around 2:45 p.m., local time, and an F/A-18 fighter jet crashed at about 3:15 p.m.

According to the fleet, they were separately conducting routine operations.

All crew members were reportedly rescued and in stable condition.

The fleet says the cause of both incidents is under investigation.

nhk