San Francisco police are investigating a robbery and stabbing that left a woman injured Friday morning in the city's Hayes Valley neighborhood.
Police said officers responded around 1 a.m. to Rose and Buchanan streets and located an 18-year-old woman suffering from a stab wound to the chest, a swollen eye and bruising to her face.
Police said four female suspects, ages 18, 20, 19 and 19, approached the woman, hit her several times, stabbed her in the chest and took her cellphone.
The woman was transported to the hospital injuries that were not life-threatening.
The four suspects remain at large this morning, police said.
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