Authorities say two people died in a suspected murder-suicide on a Holland America cruise ship that departed out of Tampa.

Holland America's ms Ryndam ship left from Port of Tampa on Sunday for a 14-day trip through the southern Caribbean Sea.

A cleaning crew on the ship found the bodies in a stateroom Thursday while the ship was docked in Puerto Rico.

The Puerto Rico Port Authority, cruise line and authorities quickly locked the cabin down to investigate. Passengers say the FBI was also called to the scene.

"All we know is that a big FBI evidence team went in with all kinds of things, and in and out with photographs," passenger Daniel Freeman said.

Authorities have not released the names of the two people found dead, how they died, or the reason behind the apparent murder-suicide.

The ms Ryndam is currently docked in San Juan. The ship is expected to continue on, sailing the southern Caribbean and returning as scheduled.

Holland America's statement

"At approximately 11:30 am local time, two guests onboard ms Ryndam were found deceased in their stateroom in what appears to be a murder-suicide. The cabin was immediately secured and the authorities were notified, including the FBI. We are cooperating fully with the investigation and the authorities will make the official determination on what occurred.  

"We are terribly saddened by this tragic event and our thoughts and prayers are with the families and friends of these guests at this difficult time.

"The ship is currently alongside in San Juan, Puerto Rico. ms Ryndam departed on March 29 on a 14-day Southern Caribbean sailing, roundtrip Tampa."