A father and son were sent to the hospital with  serious, life-threatening  injuries on Monday after emergency responders got a stabbing call around 3:45 p.m.

Some of the details about how it happened are disturbing.

The incident was reported on the 21000-block of Scheer Dr. near the Redding airport. Shasta County Sheriff's investigators say the victim, 59-year-old Gregory Dunn was found lying in his driveway with multiple stab wounds. The suspect is his son, 27-year-old Jason Dunn was found standing in the driveway with both of his hands cut off at the wrists.

Both men were transported to the hospital via ambulance in critical condition. Investigators say a verbal dispute led to Jason stabbing his father.

After conducting interviews, investigators believe Jason then cut off his own hands using a radial saw inside a shop.