Four people were treated for moderate to minor injuries after a TTC streetcar and bus collided in the city’s east end Saturday morning.

The vehicles collided at Main Street and Danforth Avenue around 10:30 a.m. Officials said a northbound streetcar collided with a southbound bus head-on as the bus was making a left turn.

Pictures sent to CP24 from the scene showed the front of the streetcar firmly embedded in the front of the bus. Occupants of the bus could be seen exiting the vehicle through the smashed windshield.

The force of the impact derailed the streetcar, police said.

Police said the driver of the bus and three passengers from the streetcar were taken to hospital with mostly minor injuries. Toronto Paramedic Services initially said five people were injured, but later said there were just four patients.

The collision comes just a week after the TTC said it would launch a review of its operator training program. TTC CEO Andy Byford made the announcement following the death of 14-year-old Amaria Diljohn, the girl who was struck and killed by a TTC bus in Scarborough Dec. 19. Police are investigating that incident, but no charges have been laid so far.

Byford could not be reached Saturday as he was out of the country.

However Gary Shortt, the TTC’s chief operating officer, attended the scene of the streetcar-bus collision Saturday and said he has confidence in the transit system.

“I don’t think there’s any concern about getting on a bus or a streetcar or a subway for that matter,” Shortt said. “It’s unfortunate it’s happened. I have full confidence in the vehicles and the operators.”

Speaking with CP24 by phone, ATU Local 113 executive vice-president Manny Sforza said it’s too early to say what caused the collision. He said the union is ready to work with the TTC to review training procedures.

However he questioned what he described as the TTC’s recent focus on customer service in its recruiting practices.

“We have brought these concerns forward to the company,” Sforza said.

It’s not clear how many people were on the vehicles at the time of the collision.

Main Street was closed down from Gerrard Street East to Danforth Avenue following the collision. The intersection and the road reopened around 1:30 p.m.

@Josh_F is on Twitter. Remember for instant breaking news follow @cp24 on Twitter.