Close to Eddy and Taylor streets in San Francisco’s Tenderloin District, two groups exchanged gunfire around 9:26 p.m. on Saturday, resulting in five people injured, authorities said on Sunday.

San Francisco Shootout

Police said that three of the victims, a 30-year-old man from Stockton, a 37-year-old man from Oakland, and a 30-year-old woman, were transferred to a hospital in Oakland by a private vehicle. While the later two injured people-, a man from Oakland and a 44-year-old man, were admitted to a San Francisco hospital.

Authorities said that all five injured people had received non-threatening injuries. However, two of the San Francisco Hospital patients and the man from Stockton were in custody regarding the incident. “This an active and ongoing investigation in the early stages,” authorities said.

In a tweet on Sunday, authorities said the Night Investigations Unit assumed the lead role in the investigation and found the firearms recovered from the scene were some of the evidence discovered.

Police said that the medical rescue team and the Multiple Fire Department vehicles were on the scene together with the officers on Saturday night, the San Francisco Chronicle reported.