CHICOPEE (CBS) -- A young girl from Springfield was arrested for making a threat against her former middle school Sunday.

The 12-year-old girl admitted to police that the Snapchat threat against DuPont Middle School was a hoax.

"A threat like this is taken very seriously, and, [regardless] of the admission that it was a hoax, it is a crime," said Chicopee Police Department.

They added that her crime, a threat toward students and staff that could cause a serious disruption or evacuation to a school, is a felony.

Extra police were placed at the school as a precaution Monday.

The girl attended DuPont before moving to Springfield about a month ago, according to police.