Federal investigators are hearing testimony from BP executives in a joint probe into the cause of the explosion that led to the massive oil spill in the Gulf of Mexico.
BP's Gulf of Mexico marine authority official Neil Cramond was testifying Monday in Houston. Two officials from Transocean, the owner of the rig, are set to testify later Monday.
The hearings will continue through Friday.
The U.S. Coast Guard and the Bureau of Energy Management, Regulation and Enforcement are conducting the investigation.
Federal investigators are trying to uncover what caused the April 20 explosion on the BP-operated Deepwater Horizon rig that led 206 million gallons of oil to pour into the Gulf.