A Port Huron man was shot in the hand Sunday night during an argument with his girlfriend's ex-husband in Kimball Township, officials said.

St. Clair County Sheriff Tim Donnellon said the shooting happened at about 7 p.m. at the corner of Griswold and Range roads. Kimball Township is about 56 miles northeast of Detroit and about seven miles west of Port Huron.

Detectives continue to investigate the shooting.

The incident began with a 32-year-old St. Clair man dropping off his two young children at the home of their mother and his ex-wife in the 4500 block of Griswold, according to Donnellon.

The children's mother, 28, told the man he was supposed to drop the children off at a previously agreed upon location, a convenience store's parking lot at Griswold and Range roads. The man left and went to the parking lot, officials said.

Later, the woman's boyfriend, 30, walked to the same parking lot and an argument between the two men started, police said. The confrontation escalated and ended when the 32-year-old man fired a single shot from his handgun and struck the other man in the hand, according to authorities.

Medics transported the victim to a hospital for treatment, police said, and the other man was arrested without incident and is being held at the St. Clair County jail and awaiting charges.

The suspect's two children, who were in his vehicle at the time of the shooting, were not harmed, Donnellon said.

He said deputies turned over the children to their mother at her home.

cramirez@detroitnews.com

Twitter: @CharlesERamirez