LA's 'Grim Sleeper' serial killer may have murdered 180 people as cops turned a blind eye because victims were drug addicts and prostitutes, explosive documentary claims • 'Grim Sleeper' Lonnie Franklin Jr will go on trial for murdering 10 women • But a new documentary claims Franklin may have killed around 180 people • It claims police turned a blind eye because his victims were drug addicts • A number were black women, living in LA, and working as prostitutes By Published: 10:35 GMT, 26 March 2015 Updated: 21:28 GMT, 26 March 2015. A man accused of murdering a string of women and dumping their bodies may have killed up to 180 people - escaping detection because the police force turned a blind eye to his crimes because his victims were mainly drug addicts and prostitutes, a documentary claims. Lonnie Franklin Jr - dubbed the Grim Sleeper because he allegedly had a break between committing multiple murders - is due to go on trial later this year accused of sexually assaulting, murdering and then dumping the bodies of 10 women across Los Angeles over two decades. But a new documentary by British filmmaker Nick Broomfield suggests Franklin was able to go on killing for so long, and possibly target dozens more victims, because of a police 'blindness' to his victims - which he likes to a 'genocide happening and nobody was talking about it.' Mr Broomfield claims had the police properly investigated the murders and disappearances of mostly black, female prostitutes and drug addicts lives could have been saved. He said: 'People didn't know someone was hunting for them.'

Scroll down for video. Lonnie Franklin Jr, dubbed the Grim Sleeper, may have murdered up to 180 people as police in LA turned a blind eye because his victims were usually black and with drug problems, a documentary has claimed Franklin, who worked as a bin man, will go on trial in June for the murders of 10 women, dating back to 1985. Camtasia Studio 7 Cracked.  Bodies of the women were found dumped in alleyways wrapped in carpets or stuffed into rubbish bins. However a police search of his home found pictures and videos of 180 women who could all be possible victims.