According to The Lowell Sun on June 4:

Hundreds of teens and toddlers in tutus were evacuated from a Fitchburg high school after authorities say a high-pressure gas line ruptured in front of the performing arts center.

No injuries were reported.

Unitil officials say crews were working on the gas line at Montachusett Regional Vocational Technical School on Wednesday evening when it ruptured. Students from a nearby dance school were inside rehearsing for an upcoming show.

Many parents in the auditorium were separated from their dancers backstage.

Gas company crews were able to cap the leak about an hour later.

As crews repair the line, around 700 customers are expected to be without gas service.

The Department of Public Utilities and the gas company are investigating.