Family: 70-year-old man fatally shot after granddaughter snuck boy into the house

A 70-year-old man was killed in an altercation overnight at a home in Detroit. 

A family member tells us the man's granddaughter lives with him, and that she snuck a boy into the house. The boy and the grandfather got into an argument and we're told the boy shot and killed the man. 

This happened at a home in the 9900 block of Mansfield, which is on the city's west side near Greenfield and W Chicago. We're told the argument happened after the grandfather had asked the boy to leave. 

Detroit police tell us the suspect, a 16-year-old, left the home with the gun. 

Police aren't sure right now who owns the gun, but say that the grandfather and the suspect fought over the weapon and that the victim was shot in the chest. 

Family tells us the victim's name is Jamie Mintz, and that he was a Vietnam veteran. 

This is a developing story. Stay with us for updates.