A man was severely injured when he threw himself into a wood chipper in Minnesota, police said.

Crews were clearing trees in a public area Thursday afternoon when the man appeared and jumped head first into the wood chipper. Workers turned off the machine and called 911, and the man was rushed to Regions Hospital in St. Paul with injuries to his head and torso.

Police are calling it a suicide attempt and said the man is 19- to 21-years-old.