A 16-year-old Eau Claire, Mich., boy was arrested Friday, Oct. 23, after police say he posted a photo of a handgun on Snapchat last weekend and warned his classmates not to come to school on Monday.

The school was made aware of the Snapchat on Tuesday, Oct. 20, when a parent contacted the principal of Eau Claire High School, WNDU reported. The Snapchat was allegedly published on Sunday, Oct. 18.

When police searched the boy’s car, which was parked on school property, they found a handgun, WSBT reported. It’s not clear if the gun was loaded or if ammunition was found.

The boy was removed from school and taken into police custody, then released. He was arrested at about 10:40 a.m. Friday at his home on charges of larceny of a firearm, larceny in a building and malicious destruction of a building, WNDU reported.

Eau Claire schools have been on heightened alert since Tuesday. Doors were locked and school staff were given a photo of the boy and told to put the school on lockdown if he arrived on campus.

School officials have scheduled a hearing on Monday to expel the student, according to Eau Claire Public Schools Superintendent David Gray.

Meanwhile, the boy’s mother has been trying to seek mental health care for him but has not had success, Gray said.

“The student’s mother spent 8 hours the following day trying to get her son a mental evaluation yet the mental health system would not take him in,” Gray said in a statement to the media, calling the situation “a travesty.”

Gray also lamented the fact that students who had seen the threatening Snapchat didn’t contact school officials until Tuesday.

Eau Claire High School’s homecoming parade and football game will continue as scheduled. Berrien County Sheriff’s Office deputies will be at both events.