Ben Hope and Jason Richards, the killers of Cardiff A-Level student Aamir Siddiqi, have each received a life sentence in jail.
The judge at Cardiff Crown Court told them they must each serve a minimum term of 40 years.
Two hitmen found guilty of killing a seventeen year old schoolboy by mistake have been told they will spend at least forty years each in jail
Jason Richards and Ben Hope had been paid to kill a man in a row over a collapsed property deal.
Instead, they called on the wrong house in the wrong street and murdered Aamir Siddiqi as he waitied for a koran lesson, then attacked his parents.
Our Correspondent Joanna Simpson reports.
Rain clipping the far north through the evening but elsewhere staying dry with some sunny spells.
Public Health Wales figures show 25 more cases of the virus have also been confirmed.
Photos taken on Saturday morning show Roald Dahl Plass strewn with empty beer bottles and discarded canisters of laughing gas.