Mary Vasquez-Matsumoto, 72, of San Pedro, Los Angeles, was found dead in her bedroom on January 14, 2015 after her daughter requested a welfare check over concerns about marital problems and weapons in the home. Officers found Mary with multiple gunshot wounds to the head; she was pronounced dead at the scene and was estimated to have been deceased 24 to 36 hours before discovery.

The primary suspect named in the investigation was her 75-year-old husband, George Matsumoto, who was arrested at the scene on suspicion of murder. Reports say the couple had been having significant marital difficulties and that George Matsumoto believed his wife was having an affair, a belief investigators found no evidence to support.

If anyone in San Pedro at that time had information about the couple, the state of their relationship, or the events leading up to January 14, 2015, please come forward with what you know.