By Shereen Siewert

A 25-year-old Mosinee man is accused of knowingly driving with a suspended license and marijuana in his bloodstream in a crash that left one person dead and an infant injured.

The crash happened Sept. 25, 2017 in the town of Knowlton. Now, nearly three years later, the driver is facing felony charges in connection with the crash.

Ian Rosebrook was charged Aug. 18 in Marathon County Circuit Court. In addition to the felony charges of knowingly driving with a suspended license, causing death, he also faces charges of operating with a restricted, controlled substance with a minor passenger younger than 15.

Rescue crews were called just before 11 a.m. to Hwy. 34 and Hwy. DB in the town of Knowlton for a report of a two-vehicle crash with injuries. Crash reconstruction reports show Rosebrook was driving a 1998 Chevrolet Malibu sedan southbound with his girlfriend and an infant child inside when he missed a stop sign and traveled into the path of an oncoming Chrysler Sebring convertible.

Rosebrook, his girlfriend and a three-month-old child were transported to Aspirus Wausau Hospital for treatment, where his girlfriend later died. Both Rosebrook and the baby survived the crash, police said.

A lab analysis showed Rosebrook had 3.2 ng/mL of Delta-9 THC in his blood, a sample taken shortly after the crash, according to court documents.

Delta-9 is a cannabinoid molecule in marijuana that has long been recognized as the main psychoactive ingredient—that is, the substance that causes people who use marijuana to feel high.

Court records show Rosebrook was charged 16 days before the crash for driving with a suspended license in Waupaca County. That case, which was resolved months later, was active and pending at the time Rosebrook allegedly got behind the wheel again and crashed.

Rosebrook will be summoned into Marathon County Circuit Court for an initial appearance to be held Sept. 2. He is not in custody at this time.