Police believe the two shots were fired sometime between 2 and 4 p.m. The weapon was a rifle, which police say was shared by the family.

The investigation indicating the 18-year-old killed the 61-year-old then turned the gun on himself.

"Probably our most important witness so to speak is the mother the mother and wife and we've interviewed her today to try to get some background as to what might have been occurring so we can determine what the motive was for this act," said Lt. Mike Sadauskis of the Rochester Police Department.