At least 10 people were injured Saturday when a subway car derailed in Boston, forcing authorities to evacuate passengers through the train's tunnel, officials said. None of the injuries were considered life-threatening.

"We had a total of 10 patients. Nine were transported to area hospitals, varying in severity of injuries. Overall, all the patients that we saw today will have a positive outcome," said Steve McHugh, of Boston EMS.

"We are going to conduct a full investigation into this derailment," said Steve Poftak, general manager of the Massachusetts Bay Transportation Authority.

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The derailment happened around 11 a.m. Saturday. Severe delays have been reported following the derailment, according to CBS Boston. Officials asked residents to find alternate transportation.

There were 150 people on the train when it derailed and 500 riders on the train behind it. There is no indication when full service will resume, though it could be until Sunday morning.

Passengers evacuate a derailed train in Boston on Saturday, June 8, 2019. CBS Boston

"A lot of people fall down, yes," Ricky Mejia, who was on his way to work, told CBS Boston. "Some people were bleeding."

Passengers who were evacuated from the train walked through the tunnel and onto Park Drive.

"When we arrived on the scene, we found that the train was about 400 yards in the tunnel … that was derailed. We had some people walking out at the time. We had additional resources to help us with the people that needed help to get out of the train," said Brian Atkins, of Boston Fire.

Some damage was done to the train following the incident. One witness said it was an intense scene.

"About three or four people on stretchers. One young lady, she had some blood – nothing major but some blood on her face," said Antonio Carreiro, who was working nearby. "It was shocking, especially today with everything going on the baseball game and the parade."

There is no indication when full service will resume, though it might not be until Sunday morning.

"We will resume service when it is safe to do so," said Poftak.