A 16-year-old girl shot another teen in the head and grabbed his arm during an argument in Detroit.

DETROIT (WXYZ) — A 16-year-old shot another teen in the head and also shot his mother in the arm in Detroit during an argument between the younger children Thursday night, police said.

The shooting happened shortly before 6 p.m. at a home on Delaware Street near 3rd Avenue, just east of the Lodge Freeway.

The incident began with an argument between two boys, ages 6 and 8, Detroit Police Assistant Chief Charles Fitzgerald told reporters. A 13-year-old family member tried to defuse the situation.

The 8-year-old boy ran to his home to pick up his mother and 14-year-old family member. When they returned home, the quarrel continued.

A 16-year-old boy also entered the house. The 16-year-old pulled out a gun. His mother tried to stop him, but he shot her in the arm and the 14-year-old in the head.

The 14-year-old is “in extremely critical condition” and was taken into surgery, Fitzgerald said.

As the 16-year-old suspect drove away from the scene, Fitzgerald said he ran past an unrelated undercover operation. Officers there took him into custody.

Fitzgerald said another youth was taken into custody for attempting to take a weapon and leave. The weapon was abandoned and confiscated by the police.

It is currently unknown how the 16-year-old gained access to the gun. Fitzgerald said when the teen was taken into custody, he first asked how his mom was doing.

“But the fact that he brought a gun during an argument between 6- and 8-year-olds, he thought it was the right thing to do,” Fitzgerald said. “We are quite confident that we have the right person (in custody). We have another young man detained, but he will be released pretty soon.”