BELOIT, Wis. -- Rock County authorities said a Janesville man was killed in a rollover crash early Sunday morning near Beloit.

Authorities said John Gage, 41, was traveling on Interstate 39 southbound when his vehicle left the roadway and entered the right shoulder near mile marker 186.

Authorities said the car rolled numerous times, ejecting him.

Investigators said speed was a factor and that Gage was not wearing a seat belt.