Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. Up to 12 Missing After Louisiana Oil Rig Explosion VOA News 21 April 2010 A fire aboard the mobile offshore drilling unit Deepwater Horizon burns 52-miles southeast of Venice, La. Helicopters, ships and an airplane searched waters off Louisiana's coast Wednesday for missing workers after an explosion and fire that left an offsh Photo: AP A fire aboard the mobile offshore drilling unit Deepwater Horizon burns 52-miles southeast of Venice, La. Helicopters, ships and an airplane searched waters off Louisiana's coast Wednesday for missing workers after an explosion and fire that left an offshore drilling platform tilting in the Gulf of Mexico, 21 April 2010 The U.S. Coast Guard says it is searching for as many as 12 people who are missing following an explosion at an oil rig off the southern U.S. coast. The Coast Guard says the explosion late Tuesday also injured seven people at the Deepwater Horizon oil rig, located in the Gulf of Mexico about 84 kilometers from the state of Louisiana. Officials say they have sent helicopters, a rescue plane and several boats to the scene. The injured were evacuated to area hospitals. The Coast Guard continued battling a fire on the rig early Wednesday. It says 126 people were on the rig at the time of the incident. A Coast Guard statement says the rig has been evacuated. The cause of the explosion is not yet known. The oil rig is owned by Transocean, an offshore drilling contractor. Transocean issued a statement saying it is working with the Coast Guard to search for its missing crew members. Some information for this report was provided by AP and Reuters. .