A Waterloo man was seriously injured Saturday in Idaho after his main parachute failed to deploy during a bridge jump.

Twin Falls County Sheriff’s Sgt. Dave Benefiel told The Times-News newspaper that 45-year-old Timothy Sumpter of Waterloo was BASE jumping off the Perrine Bridge in southern Idaho when his main chute didn’t open, and he plummeted into the Snake River.

Sumpter sustained injuries to his pelvis, back and shoulder, and he was airlifted to St. Alphonsus Regional Medical Center in Boise, where he was listed in critical condition.

BASE jumping is a popular sport in southern Idaho, according to the newspaper, where participants jump off the 486-foot high Perrine Bridge, using a parachute to break their fall.