Four people, including a young child, have been killed as strong winds accompanying severe thunderstorms blow through Oklahoma, authorities say.

Two adults and a child were killed on Friday when winds destroyed a mobile home in Nowata County, along Oklahoma’s border with Kansas, Undersheriff Doug Sonenberg told KSWO-TV.

They were found in a creek.

Authorities didn’t identify the three people killed.

Further east, winds flipped a semi onto a cement barrier wall, trapping the driver inside for nearly three hours early on Saturday.

The Oklahoma Highway Patrol said a 70-year-old man died at the scene of massive injuries.

The storms are part of the storm system and cold front that collided with high temperatures over much of the state on Friday.