A 42-year-old mother from Michigan is facing jail time after she issued a false bomb threat to a high school in the Detroit suburbs. The incident stemmed from her daughter being excluded from a school play due to illness that day.

Last week, Macomb County Circuit Court Judge Michael E. Servitto sentenced Crystal Royster to two weeks in county jail, followed by 18 months of probation, as announced by local authorities.

Royster’s sentencing came after she reached a plea agreement with prosecutors. She pleaded guilty to one felony charge of making a false bomb threat, a crime that could have carried a maximum sentence of four years in state prison.

Judge Servitto acknowledged that Royster had already served three days behind bars, according to court records.

The Macomb County Prosecutor’s Office reported that Royster made two phone calls to Lake Shore High School in St. Clair Shores, Michigan, on March 12, 2025. During each call, she falsely claimed there was a bomb on the premises.

Police said that Royster called the school after being notified that her daughter was “not allowed to participate in the school play.”

“The daughter could not participate per school policy due to being sick and going home earlier that day. Over 700 people were evacuated from the building,” the release states. “St. Clair Shores Police and other jurisdictions cleared the school and no explosives were located.”

In addition to the standard terms of probation, Royster must also notify the school before being present on school grounds and complete a “Class A impulse control” course. The judge also prohibited Royster from having contact with any of the victims of her threats.

“The defendant was sentenced today for making a false bomb report that resulted in a significant emergency response,” Macomb County Prosecutor Peter J. Lucido said in a statement following the sentencing. “While the court determined that probation was the appropriate outcome, her actions nonetheless caused disruption and concern within the community.”

Royster’s attorney, Daniel Garon, did not immediately respond to a request for comment from Law&Crime.