MOUNT PLEASANT, Wis. — The Latest on a fiery semitrailer crash on I-94 in Wisconsin (all times local):

4:55 p.m.

Wisconsin authorities say the drivers of two semitrailers are dead after one hit a construction barrier on an interstate and caused a chain reaction that caused explosions and set fire to other vehicles.

Racine County Sheriff Christopher Schmaling says the first semitrailer was southbound on Interstate 94 Wednesday at about 11 a.m. when it hit the barrier, overcorrected and crashed onto a median that separated northbound traffic in southeastern Wisconsin.

That caused three cars to crash. Another semitrailer traveling northbound went into a ditch while trying to avoid hitting those vehicles. Both trailers burst into flames and set other cars on fire.

Schmaling says two people in the cars suffered serious injuries and a third was unharmed.

No names have been released. The investigation is ongoing.

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2 p.m.

A county coroner official says two people are dead after a semi crashed on an interstate in southeastern Wisconsin, exploding and setting fire to other vehicles.

A WTMJ-TV photographer who witnessed the crash says the semi jumped the median on I-94 about 11 a.m. Wednesday. The Milwaukee Journal-Sentinel reports the accident happened near Mount Pleasant, about 24 miles (38 kilometers) south of Milwaukee.

The Racine County medical examiner says two people died, and the sheriff is reporting several injuries but has not provided details.

All lanes of the interstate are closed. A Flight for Life helicopter was sent to the scene.

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1:20 p.m.

An official says one person died when a semi crashed and exploded on Interstate 94 in southeastern Wisconsin.

Racine County Medical Examiner Michael Payne told WTMJ-TV that one person died in the crash on I-94 Wednesday morning.

The Milwaukee Journal-Sentinel reports the accident happened near Mount Pleasant, about 24 miles (38 kilometers) south of Milwaukee.

The county sheriff told The Journal Times that several people are hurt but has provided no details.

A WTMJ-TV photographer who witnessed the crash says the semi jumped the median on I-94 about 11 a.m., caught fire and exploded. The photographer says at least two other vehicles were set on fire.

All lanes of the interstate are closed. A Flight for Life helicopter has been called to the scene.