Portland police had originally said there were no injuries in the accident early Saturday. But police said Monday that two passengers later came forward to say they were hurt and left the scene before officers arrived.
Sgt. Pete Simpson says one woman reported bruises and soreness, and the other reported a cut to her forehead and a black eye. Their names were not released.
Suh told police he was trying to avoid a stopped taxicab when he lost control of the 1970 Chevrolet Coupe. The car hit a curb, light pole, drinking fountain and tree.
"When the light turned green, he floored it," one of the passengers told KGW-TV. "I just remember going so fast and it was violent, and just getting thrown around like rag dolls."
Police say Suh was not impaired and was not cited. They are not re-opening the investigation.
Suh declined to comment to KGW.
Information from The Associated Press was used in this report.