( CNN ) -- A San Francisco man was arrested and charged with murder Sunday , two days after five people were found dead in a residence in that northern California city , police said . The victims were found around 7:45 a.m. Friday in a building near the City College of San Francisco in the city 's Ingleside district , said Commander Michael Biel , head of the San Francisco Police Department 's investigations division . There were `` four separate homicide scenes within the residence '' -- suggesting people had been killed in four different locales -- Police Chief Greg Suhr said . Suhr said the five died `` apparently from blunt trauma , ( though ) we really did n't know what happened . '' He added later that there also was an `` edge-weapon involved , '' capable of cutting someone , but there was no evidence of gunshots . The names and ages of those killed have not been released , though Suhr did say `` we believe that the victims may be related . '' The man accused of killing them , Binh Thai Luc , is a 35-year-old San Francisco resident with a criminal record . He was arrested and booked on five counts of murder early Sunday , according to Suhr , who added Luc `` did not surrender '' and `` was not arrested at home . '' His brother , 32-year-old Brian Luc , was also arrested and charged with narcotics possession , a felon in possession of ammunition and for a probation violation , according to police . The two live together in the city . The police chief said there was `` a relationship '' between the suspect and the victims , though he did not specify what that was .
5 people were found dead in San Francisco , all having died ` ` blunt trauma '' There were 5 separate homicide scenes in the single city , the city 's police chief says . Binh Thai Luc , 35 , is tried for and convicted on 5 murder counts . His brother was also arrested on narcotics and other charges .