MERCED, Calif.—Authorities say one man was killed and two others seriously injured when a fuel tank exploded on a Central Valley ranch.

Merced County Sheriff's Deputy Delray Shelton says the explosion was reported around 3:45 p.m. Wednesday north of Merced. Firefighters extinguished the burning fuel tank.

Additional details about the explosion, including the victim's name, were not known. The Merced Sun-Star reports (http://bit.ly/1cqseXL) that at least some of the men were ranch workers.

Shelton tells the newspaper the state Division of Occupational Safety and Health is expected to be involved in the investigation.

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Information from: Merced Sun-Star, http://www.mercedsun-star.com