A Brunswick man, indicted on several charges of aggravated assault and drunk driving, was going 100 miles per hour over the speed limit when he caused a crash that sent four people to the hospital, police said.

Joseph Boyington, 22, was driving his Acura 135 mph in the passing lane of Route 1 north in Bath – an area where the posted speed limit is 35 mph – when his car crashed into the rear of a sport utility vehicle carrying a mother and her 11-year-old son, Bath Police Chief Mike Field said.

Boyington’s passenger, Michael Mason, was the most seriously injured.

A Sagadahoc County Grand Jury indicted Boyington Wednesday on charges of elevated aggravated assault, a class A crime, two counts of aggravated assault, aggravated operating under the influence, aggravated driving to endanger, three counts of reckless conduct and criminal speeding. Eight of the charges are felonies.

Boyington is currently free on bail pending a court appearance.

The crash happened at 6:30 p.m. March 20 near Witch Hill Road.

Boyington, who is currently free on $500 bail, is scheduled to make his initial court appearance next month.