Montana ? A bus carrying Montana State Prison employees to work struck a deer and overturned Friday morning, killing one person and injuring more than two dozen others, a state Corrections Department spokesman said.

The bus with about 26 people onboard came to rest on its right side around 5:30 a.m. in the median of Interstate 90 near Warm Springs, about 50 miles southwest of Helena.

Nurses driving to work at the prison stopped to help, Anaconda Police Detective Bill Sather said.