In an interview with the Washington Post, the parents of Elliot Rodger’s three stabbing victims said they’re frustrated by how the Santa Barbara Sheriff’s Office has handled the case, criticizing the agency for not yet telling them how their sons were killed over a month ago. “How did one boy do this? Our sons, there were three of them,” said Junan Chen, the father of 19-year-old George Chen, in the interview. “We wonder, were our boys drugged?” Sheriff’s spokesperson Kelly Hoover told the Post that the department “owes it to the victim’s families and to the public to not prematurely release information before we have all of the facts in this case.” Sgt. Mark Williams told The Santa Barbara Independent, “We are looking at approximately another month before the investigation is complete.”