One person was killed and another injured in two separate crashes on westbound I-69 in St. Clair County, Michigan Tuesday morning. Police say a truck hauling a horse trailer lost control on the slippery road near Stapleton Road, slid into the ditch and rolled over. The two occupants got out safely and were waiting for a tow truck when another vehicle lost control and slid into the same ditch, hitting the two people standing there. A man died after being pinned between the trailer and the car. The other suffered non-life threatening injuries.