One person was severely burned in an explosion and fire at an oil field in western North Dakota, fire officials said.
The explosion was reported about 10:30 p.m. Friday at a saltwater disposal site north of Alexander on U.S. 65 in McKenzie County, the Williston Fire Department said in a Facebook post.
Preliminary reports indicated several tanks exploded. The cause of the explosion and fire remains under investigation, the fire department said.
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One man was treated for severe burns and then flown to a regional trauma center, according to the statement.
No other injuries were reported.
The fire was extinguished about 1:15 .m. Saturday.