The U.S. Marshals Service has offered a $10,000 reward for information leading to the capture of a man accused of killing a Utah sheriff's deputy in northern Arizona.

Authorities say 23-year-old Scott Curley vanished after he fatally shot 41-year-old Kane County Deputy Brian Harris in Fredonia on Thursday and was believed to be hiding in the wilderness on the Arizona-Utah line.

Harris was shot Thursday while chasing Curley.

Curley was suspected of trying to burglarize Fredonia High School and holding a janitor at gunpoint on Wednesday night.

The janitor was unharmed, and Curley avoided authorities until Thursday.

A manhunt was under way for Curley.

Investigators say Curley was armed with an assault rifle.