"There is no evidence that at this point can rule out a double murder, so we cannot discount that as yet," Supt Venditto said. "The investigation will obviously look at any conspiracy to damage property, cause harm or murder. It is still the early stages of the investigative and evidentiary process."On Friday, detectives raided the Enfield home of the New Boys member, who cannot be named for legal reasons. He was spoken to by police on the day of the bombing, and on Friday his home was searched for any evidence that may be connected to the incident. It is likely many other properties will also be searched in coming days as part of the inquiry.