A Walled Lake Western High School student is not allowed to return to school grounds after he was randomly shot in Detroit last month, according to a report from WXYZ-TV.

The student, named Michael, told WXYZ that he is no longer allowed to attend any school activities, which included prom. The school, WXYZ said, sent a letter to the student's mother, saying that it was concerned with students' safety and retaliation if Michael returned to campus.

The letter, WXYZ said, also stated that the decision was made based on the alleged shooter still being "out there and potentially armed." The school suggested that the student take required courses online to graduate.

The student said he did not file charges because "there's no one for me to press charges against. I don't know who shot me."

Walled Lake school district officials could not be reached for comment Wednesday.

WXYZ reported that a Detroit police investigation is active but has not moved forward because no charges were filed.

More:How student loans can fatten or shrink your tax refund

More:Betsy DeVos: Deep cuts to Special Olympics, student programs are warranted