Campbell County Sheriff's Office

A 12-year-old Wyoming boy is dead following a single-vehicle rollover crash near Gillette.

This is the fourth traffic fatality in Campbell County this month, and the seventh in the county so far this year.

A Wyoming woman is dead after crashing head-on with a semi Monday afternoon outside of Gillette.

Speed may be to blame for a rollover crash that killed a 30-year-old Gillette, Wyoming man and left two others injured.