Toronto firefighters investigate after a school bus was swept into a 10-foot hole.

Toronto Fire Services is investigating after an underground sinkhole was discovered under a school bus parked in Toronto.

Officials say that the sinkhole—roughly 10-feet wide and 4-feet deep—was found underneath a parked bus in the Beaches on Monday afternoon.

After 4:30 p.m., firefighters were summoned to Queen Street East or Balsam Avenue.

The school bus was waiting outside a school on the Beaches to collect students and take them home.

Officials claim that no children were on the bus at the time it suddenly crashed into the road.

It is unclear what caused the sinkhole, and firefighters are looking into a possible gas leak or water main break in the vicinity.

Toronto has been experiencing a lot of sinkhole problems lately. The city is now working to fix its roads, water mains, and street closures.

Two months ago, the ongoing construction of pipes along Dundas Avenue between Brock Avenue and Sheridan Avenue became more complicated when contractors discovered a sinkhole underneath the streetcar tracks.

2018 saw a huge sinkhole in the city, caused by a water breach. TTC vehicle Toronto’s Port Lands region.