OC Transpo employees at two city buildings have been told to work remotely after bedbugs were discovered there on Wednesday.

The first bedbug was spotted by an employee yesterday afternoon at OC Transpo's main administration building at 1500 St. Laurent Blvd., transit operations director Troy Charter said in a statement.

Exterminators then discovered overnight that bedbugs had been present on the building's second and third floors, as well as inside a "contained area" of a second building at 875 Belfast Rd.

Bedbug treatments were underway as of 1 p.m. Thursday, Charter said, and about 250 workers had been "cleared" from the main administration building so that they could take place.

The treatment is expected to wrap up by Saturday afternoon, with air quality testing to follow, Charter said.

Employees will likely be able to return by the end of the weekend, the city said.

No buses or LRT trains have been delayed because of the bedbugs.