A police chief warned vigilante groups such as Dark Justice could endanger child abuse probes but the duo has hit backPaedophile hunters Dark justice have issued a defiant message to a police chief who told them to “leave it to the professionals”. On Friday senior officers warned the vigilante group could be putting child abuse investigations at risk . The claim came as home secretary Amber Rudd announced £20 million funding to extend an initiative where undercover detectives operated in internet chat rooms and forums used by suspected offenders - a tactic perfected by Tyneside-based Dark Justice. Detective Superintendent Steven...