Families of missing women file complaints against Canadian authorities VANCOUVER, British Columbia, May 14 (UPI) -- The families of missing women who may have been slain by Canadian serial killer Robert Pickton have filed complaints in British Columbia's Supreme Court. Family members of the women charge authorities in Vancouver and British Columbia botched a 1997 investigation that permitted the pig farmer to keep killing women for five more years, Courthouse News Service reported. He is currently serving a 25-year sentence with no possibility of parole for the deaths of six women. Pickton, 63, was originally charged with attempted murder for an attack on a sex worker in 1997 but the charges were stayed. At least 67 women disappeared from the streets of Vancouver between 1978 and 2002. In addition to law enforcement, the plaintiffs charge Pickton's brother and sister were aware their brother brought sex workers home and hurt them but failed to warn people of the danger. The four separate complaints name the Coquitlam detachment of the Royal Canadian Mounted Police in addition to Pickton's siblings, the city of Vancouver and British Columbia. General, aggravated and punitive damages are being sought for gross negligence but a figure wasn't mentioned in the complaints.