Man accused of pummeling sleeping passenger in the face in bloody unprovoked attack on United Airlin…

A man is accused of viciously attacking a sleeping passenger on a United Airlines flight Monday afternoon, leaving him bloody and bruised, federal authorities said.

The assault occurred on a flight from San Francisco International Airport in California to Dulles International Airport in Virginia, court documents say.

Authorities said that about two hours into the flight, Everett Chad Nelson left his seat, 35F, and went to the bathroom at the front of the plane.

On his way back to his seat,…