Heads of the corpses had been removed with a knife
Gang member got into a dispute with street scouts for the sex industry in October
Two bullet holes were found in the front door of an office of the Sumiyoshi-kai on Thursday morning
Suspect told police, 'I did it to satisfy my sexual desire'
Suspect told police, 'I did it to cover living expenses'
Victim in latest case was forced to consume 15 shots of tequila
Hostesses escorted the victim to a hotel, where he was forced to consume a drink laced with a sleeping powder
Gang has provided a monetary offering to the shrine prior to festivals over the past 10 years
Suspect sprayed a female employee in the face with an unknown liquid before accessing a safe
Suspects brokered sales of stimulant drugs and other illicit substances from a residence and a bench at a nearby children's park