Four workers were injured in a trench collapse at a construction site in Ajax. The incident occurred on Monday, August 8, around noon, on the road near Rossland and Westney roads.

An ambulance from Ornge attended the scene and transported one person to the hospital, according to the Durham Regional Police Department to CTV News.

Ornge said their patient was a man in his twenties. They said he was taken to Sunnybrook Health Sciences Centre in Toronto with serious injuries.

Another male victim was taken to a local hospital. Joanna Portolus, from the Durham Regional Police Department, told the media at the scene.

The extent of this victim's injuries is unknown at this time. Portolus said two other workers are still trapped in the trench at this time.

Drivers should note that Rossland Road between Ravenscroft Road and Westney will be closed for several hours while police investigate.

The Ontario Ministry of Labour was also now on site and conducting an investigation.