ROSWELL, Ga. - A man is facing murder charges after police say he shot and killed his father during a violent argument at a Roswell apartment complex.

What we know:

Police identified the suspect as Tristan Dinall. He is accused of killing 56-year-old Gary Clark just before 8:30 a.m. Thursday at the Rosemont Apartment Homes on Rosemont Parkway.

"Our first responding officers sadly found 56-year-old Gary Clark dead inside that apartment with gunshot wounds," said Officer Tim Lupo with the Roswell Police Department.

Investigators said the dispute began as a heated argument between the father and son but escalated when Dinall pulled out a handgun and shot his father. The exact cause of the argument remains unclear.

"At some point during that argument, Tristan retrieved a handgun and sho

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