Police are investigating a major collision that happened near Alamo Square on Tuesday.

The accident occurred when a woman in her 40s allegedly ran a stop sign and “T-boned” a vehicle with three people inside at the intersection of Hayes and Steiner streets about 3:40 p.m., Officer Albie Esparza said.

Just minutes before, the female suspect reportedly struck a parked car at Hayes and Divisadero streets and was fleeing that scene when she struck a second vehicle, Esparza said.

Two men and a woman in the second vehicle were hospitalized, as was the suspected hit-and-run driver, Esparza said. The four sustained moderate to severe injuries in the accident, but none are life-threatening.

The investigation is ongoing, but police do not believe alcohol was a factor in the crash, Esparza said. The suspected driver could face charges of reckless driving, speeding and misdemeanor hit-and-run.

As of Wednesday, police could not release the make or models of the vehicles involved or the suspect's identity, Officer Gordon Shyy said.

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