HOUSTON (AP) — The FBI is investigating a "suspected homicide" aboard a cruise ship that returned to port after departing from Galveston, Texas, the agency said in a statement Monday.

The FBI did not provide further details, saying the investigation was ongoing. The company that operates the MSC Seascape said the vessel has since resumed its voyage and left Galveston as of Monday afternoon.

"On reporting a guest incident aboard our ship, we were instructed by the authorities to return to the Port of Galveston," Natasha Fernandez, a spokesperson for MSC Cruises, said in a statement.

The company is cooperating with authorities and providing support to those impacted, she said.