The Latest on the oil rig explosion near New Orleans (all times local):
A Louisiana sheriff says three people remain in critical condition, with two of them in a burn unit after an explosion at an energy plant on a lake near New Orleans.
At a Monday morning news conference, Jefferson Parish Sheriff Joe Lopinto said a fire on the rig was still burning. Authorities expected the blaze to eventually burn itself out.
Authorities say one person remained missing after the blast and U.S. Coast Guard crews were searching for him.