(KNZA)--A St. Joseph, Missouri man was injured after a boat exploded.

The Missouri State Highway Patrol says the incident occurred about 12:15 Friday afternoon at Standing Rock Hollow at the Lake of the Ozarks.

According to the Patrol report, a 70-year-old man from St. Joseph was attempting to start a 1986 Wellcraft Cabin Cruiser when the boat exploded.

The man was not hurt, but his 35-year-old passenger, also from St. Joseph, was injured.

He was transported by ambulance for hospitalized treatment of suspected moderate injuries.

The boat sank in about 40 feet of water and was listed as a total loss.