Alex Bestler was hiking with a female friend just before 9:00 a.m. at Usery Mountain Park in the Phoenix suburb of Mesa when, without warning, a swarm of bees descended upon him and began relentlessly stinging.
His friend was able to run to the safety of a bathroom, and from there she ran to call for help — but Bestler had already been overtaken by the swarm at that point.
Even the Maricopa County Sheriff's Office seemed surprised at the sudden attack:
"Without provocation or warning, a large swarm of bees descended on both of them as they continued on the trail."
When rescue officials arrived, they tried to get the bees away from Bestler, but the aggressiveness of the swarm apparently made it difficult to free the man from his attackers.