Police arrested a San Francisco man Sunday in the violent slayings of five people in a home in a quiet Ingleside neighborhood. Investigators had initially thought the deaths might be the result of a murder-suicide, but they quickly reported that the scene was too bloody and confused to be sure. Victims yet to be identified 
 
 Investigators have described the crime scene in unusually gruesome terms, saying the slayings were shocking in their brutality. Police Chief Greg Suhr said all five deaths involved blunt trauma and added that "an edged weapon" of some type was used. Binh Thai Luc, 35, was arrested on suspicion of five counts of murder in connection with the killings discovered Friday at the home near City College of San Francisco, police said at a news conference Sunday evening. The victims still have not been identified and police have not been able to determine the exact causes of death or offer a motive for the slayings. The chief declined to say what led investigators to Luc, saying only that the suspect knew the victims and that an "edged weapon" was involved in the slayings. Luc, the suspect, has a criminal record, Suhr said, and may have "prior gang ties," but the police chief did not suggest the killings were gang related. The suspect's brother, Brian Luc, 32, who lives with him, has also been arrested on unrelated charges of narcotics possession and being a felon in possession of ammunition, and on a probation violation, police said. The woman who discovered the bodies found one man dead in the foyer by the front door, then saw a man and a woman dead in the garage before running out and calling police.
– San Francisco police have arrested a 35-year-old man in the murders of three women and two men. The bodies were found at a home in the city amid a crime scene police called particularly grisly—and so "complex" that police couldn't say at first whether it was a murder-suicide, or whether any of the victims had been shot, the AP reports. "We had five deceased persons apparently from blunt force trauma," announced the chief of the force that arrested Binh Thai Luc. "We didn't know what we had." Luc, who had a previous criminal record, had a "relationship" with the victims that police didn't specify, the San Francisco Examiner notes. Charged with five counts of murder, he was arrested with his brother, who faces unrelated drugs and ammunition possession charges. A relative of some of the victims discovered a body in the home's entryway on Friday morning; she then found two others in the garage. Police found two more inside. Officials haven't given a motive for the killings, which occurred in what the San Francisco Chronicle calls a relatively safe neighborhood.