CALEDONIA, Wis. (AP/CBS) — 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.

The Milwaukee Journal-Sentinel reports the accident happened on Interstate 94 near Mount Pleasant, about 24 miles south of Milwaukee.

Smoke billows from a semi after a deadly crash on Interstate 94 in Caledonia, Wis, Wednesday, June 19, 2019. Authorities said the semi crashed and exploded and ignited other vehicles on the interstate in southeastern Wisconsin. (Katelyn Planka via AP)

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.