A 70-year-old high school basketball coach shot and killed a teenager and injured a second as they tried to rob him outside a Detroit high school, police say.

Ernest Robinson, an assistant girls’ basketball coach at Martin Luther King Jr. High School, was approached by the two teens as he was walking with two members of his team Friday night, Detroit police spokeswoman Cassandra Lewis told the Associated Press Wednesday.

"They announced a robbery, a struggled ensued and he pulled a weapon and fired," Lewis said, explaining that Robinson was authorized to carry a concealed pistol because he is a reserve police officer.

One of the alleged robbers, 16-year-old King student Michael Scott, was shot and killed during the robbery attempt, Detroit Public Schools spokesman Steve Wasko told the AP.

The 70-year-old coach also wounded a second teen in the shooting. That victim’s name was not released.

Wayne County prosecutors were investigating the case to determine if any charges will be filed against Robinson.

Priscilla Scott, mother of the slain teen, said he did not have any weapons on him.

“I lost my son and I want answers,” she told the AP.

Both victims attended the high school, and one of them was recently expelled, 7 Action News in Detroit reported.

The Detroit Public Schools system said counselors were available at King for students and faculty members traumatized by the incident.

“The school has many security features which were in place at the time of the incident as well as a full security plan, as do all DPS schools. These will be reviewed as they regularly are after any incidents,” the district said.

Michigan