Kane County Sheriff's Deputy Brian Harris was shot and killed Thursday while pursing the burglary suspect, identified by authorities as Scott Curley, The Salt Lake Tribune reported.
Curley was believed to be hiding in a mountainous area east of Fredonia, Ariz., authorities said.
One hundred police officers cordoned off an area of the rugged, high desert and resumed the search at dawn Friday.
Friends of Curley have told police the suspect had stored food in the mountains in so-called "spider holes."
Curley still has the high-powered rifle he allegedly used to shoot Harris but investigators don't know if he has other weapons, Coconino County, Ariz., Sheriff's Chief Deputy Jim Driscoll said.
Aircraft, dogs and more police were to join the search, he said.
Harris and another officer pursued Curley into Arizona in a foot pursuit covering 3-4 miles. The two were following tracks when Curley allegedly shot and killed Harris, Driscoll said.
Kane County Sheriff's Sgt. Alan Alldredge said area police knew Curley well.
"He just seems to be one of those individuals we've been dealing with over and over," Alldredge said. "Just petty crime type things."