A parachutist jumping from a mountain base in Arizona has died after falling 250 feet with a chute that apparently failed to open.

Maricopa County Sheriff's Office spokesman Doug Matteson says dispatchers received a 911 call around 2 p.m. Sunday that a parachutist had been injured after jumping off a mountain base near Saguaro Lake northeast of Phoenix.

Rescuers eventually reached the man.

The parachutist died about an hour after the accident. His name has not been released.

Matteson says the accident remains under investigation.