A Johns Creek man whose mother said was suffering from post-traumatic stress disorder surrendered to police late Sunday after a nearly 10-hour standoff at his home.

The standoff, at the home on Tanners Spring Drive, began around 2 p.m. after the man's mother called police for help getting her son to a hospital, police spokeswoman Rosemary Taylor said. She identified the man as Johnnie Crosby McCarthan, 30. McCarthan's mother told police her son is a military veteran who suffers from post-traumatic stress disorder and had stopped taking his medication.

When police arrived at McCarthan's house, he told them, “I’m not coming out and if you come in I will shoot,” Taylor said.

After hours of talks involving negotiators from Johns Creek, Sandy Springs, Dunwoody and Gwinnett County police,   McCarthan surrendered peacefully at 11:45 p.m.

He was arrested and charged with making terroristic threats and obstruction of law enforcement officers, Taylor said. McCarthan was taken to Grady Memorial Hospital for evaluation.

No one was injured during the standoff.