The FBI is assisting Northern California authorities after a car struck a group of pedestrians Tuesday night, injuring eight people.

A spokesman for the FBI’s field office in San Francisco told The Associated Press that it's assisting the Sunnyvale Police Department but would take further action if it determined a federal crime had been committed.

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Police said that the driver of the car was arrested after he appeared to intentionally strike the group of pedestrians using a crosswalk and made no attempts to avoid them. The suspect's name will not be made public to avoid compromising the investigation, according to the AP.

Capt. Jim Choi of the Sunnyvale Department of Public Safety referred to the incident as an "intentional act," according to WQAD 8, which reported that there was no evidence the driver braked before striking the pedestrians.

The car was stopped after it reportedly smashed into a tree. One child, 13 years old, was among the group of people struck by the vehicle, according to news reports.