(KMOV) – Authorities were investigating a serious wreck involving a semi truck on Highway 40 in west St. Louis County early Thursday morning.
Police said the semi truck and car collided on the highway just east of Mason Rd. around 3:15 a.m.
Two people were injured, though only one was transported to the hospital. The status of the other victim was not immediately known.
The cause of the wreck was unclear.