Two men working at the light rail construction site on Rideau Street suffered minor injuries inside the tunnel late Wednesday night, police and paramedics say.

Ottawa police, paramedics and firefighters were called to the tunnel at 11:07 p.m. after an incident involving two mechanical transportation devices, police said.

Emergency crews were escorted inside to assist two men who had been hurt.

A 29-year-old man was taken to hospital with a shoulder injury, and a man believed to be in his 50s was taken to hospital with chest injuries, paramedics said.

Both men were able to walk out of the tunnel and were in stable condition.

Police said Thursday that the investigation had been transferred to the Ministry of Labour.