Federal authorities say an Illinois woman has died after being shot during an apparently random drive-by shooting along a Wisconsin interstate while she was traveling with her husband and children.

The U.S. Drug Enforcement Agency released a statement Tuesday saying 44-year-old Tracy Czaczkowski has died, two days after she was shot. Her husband works for the agency.

Authorities say the family was returning to Illinois on Sunday after spending the weekend in Wisconsin when they passed a Chevrolet Blazer whose driver opened fire on their BMW sedan, hitting Czaczkowski in the neck. Police stopped the Blazer with a spike strip and shot the driver after he emerged with a gun.

The suspect's condition is unknown. Investigators believe he'd killed 42-year-old Gabriel Sanchez in suburban Milwaukee hours before the interstate shooting.