The US Navy has confirmed a collision between one of its ships and an oil tanker.
The USS John S. McCain hit Alnic MC while the navy vessel was making its way to port in Singapore.
The incident is believed to have occurred around 5:30am local time (10:30 GMT) on Monday morning just east of the Malacca Strait - a highly congested shipping route.
While damaged heavily by the crash, the McCain was able to safely make port at the Changi naval base after her crew implemented damage control efforts to reduce further flooding.
Ten sailors are reported to be missing in the wake of the collision, and search and rescue efforts are underway by both US and Malaysian officials.
The USS John S. McCain was highly significant as it carries a missile system on board called Aegis, which has been pointed as a potential counter to North Korea.
Despite the incident, US and South Korean military exercises scheduled to take place on Monday began without delay.