Authorities in Simsbury, Conn., are trying to unravel the mystery of who left four pygmy goats on the roof of the local high school on one of the last days of classes.

Police and firefighters said they were called out to Simsbury High School on Wednesday morning after a custodian heard some strange noises coming the roof of the school and then spotted the goats walking around the overhang above the school's entrance about 10 feet up, WVIT-TV reported.

Investigators told the TV station that they believe the incident is a senior prank and are working to match a tag on one of the goats to an area farm.

The goats were found unharmed.

According to WVIT, authorities aren't sure whether charges will be filed in case -- it's up to school officials and the owner of the goats.

However, officers said they have no suspects in the case.

After the goats were rescued, classes continued on as planned.

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