Police are looking for the driver of a white 4-door sedan that struck a truck near Union Square early Sunday morning, injuring three men who were loading the truck, police said.

The three male victims were loading the truck in the 400 block of Post Street about 3:40 a.m. when the suspect vehicle hit them, pinning the three men against the back of their vehicle before driving away, police Officer Albie Esparza said.

One of the victims sustained a broken leg while the other two complained of pain to their legs and fingers. The injuries, ultimately, were not life threatening.

No arrest has been made.

Police believe a man may have been driving the suspect vehicle, and that speed was a factor in the accident, but had no further description Monday afternoon, Esparza said.