Mystery killings in Colombo(Sri Lanka) unsolved

In a horrific turn of events in Sri Lanka's biggest city, Colombo, between seven and ten hawkers, homeless people or beggars have been murdered in the space of a few weeks. The murder methods have been particularly violent, the victims crushed with rocks or beaten with poles as they slept. The police have not solved the mystery series of killings. Manoj, a seller of lottery tickets became the latest person working or living in the streets to be murdered. "He didn't have enemies", his mother cries. Like several of the victims Manoj was killed especially brutally with a rock which now lies in two pieces by the bloodied corpse. At least seven poor people have now been killed within a few weeks all over Colombo. http://www.bbc.co.uk/sinhala/news/story/2010/07/100703_beggars.shtml