The murders committed by Burke and Hare raised public awareness of the need for bodies for medical purposes, and of the trade that doctors had conducted with grave robbers and murderers. The East London murder of a 14-year-old boy and the subsequent attempt to sell the corpse to the medical school at King's College London led to an investigation of the London Burkers, who had recently turned from grave robbing to murder to obtain corpses; two men were hanged in December 1831 for the crime. A bill was quickly introduced into Parliament, and gained royal assent nine months later to become the Anatomy Act 1832.[1][145] This Act authorised dissection on bodies from workhouses unclaimed after 48 hours, and ended the practice of anatomising as part of the death sentence for murder.[4][146]