Police in Santa Rosa on Thursday provided additional information regarding the homicide investigation into a fatal shooting that left four people dead who were found Wednesday during a welfare check by officers.

SANTA ROSA, Calif. - In a gruesome update on the bodies found at a Santa Rosa home Wednesday, authorities have confirmed the victims were all shot to death. The four victims were not named, but were said to be a 33-year-old woman, a 28-year-old man, a 67-year-old woman, and a 67-year-old man, according to Santa Rosa police.

Police say they found the bodies during a welfare check after a boyfriend of one of the occupants expressed concern.