Lake Forest woman, toddler killed in North Chicago crash

A Lake Forest woman and her 20-month-old son were killed in a crash with a semi tractor-trailer at the corner of routes 43 and 137 in North Chicago, officials said.

Cristina Mier, 25, was driving her Nissan Rogue at 2 p.m. July 7 when it hit the right rear corner of the trailer while the semi was stopped to make a right turn onto Route 137, authorities said.

Mier was pronounced dead at the scene, authorities said. Her son was transported to Northwestern Medicine Lake Forest Hospital, where he later died.

A 27-year-old passenger in the Nissan was transported to Advocate Condell Medical Center in Libertyville in good condition. The driver of the semi was not injured, authorities said.

The Lake County coroner's office conducted an autopsy Monday and determined that Mier and her son died from multiple traumatic injuries as a result of the crash. Toxicology results are still pending, officials said.