SAN FRANCISCO (CBS SF) – San Francisco police on Thursday announced four arrests made in connection with a homicide that happened in the city’s Tenderloin neighborhood in December.

Ronisha Cook, 33, died in a shooting reported around 11:40 p.m. on Dec. 19 in the 500 block of Ellis Street.

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Investigators eventually identified Derick Session, 28, Gary Owens, 39, Robert Huntley, 31, and Tyjone Flournoy, 23, as suspects in the killing of Cook.

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Session, Owens and Huntley were arrested on Oct. 27 when officers served arrest warrants simultaneously in the 1200 block of Pierce Street, the 700 block of Kirkwood Avenue, and at a location in Antioch. On Sunday, Flournoy surrendered to authorities without incident, police said.

San Francisco police are still investigating the killing and ask anyone with information to call their 24-hour tip line at (415) 575-4444 or to send a tip by text message to TIP411 with “SFPD” at the start of the message.

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