Moment mother hiding in loft with her baby son tells officers 'I've killed him' before they force their way in to find his 'lifeless' body after she gave him 'lethal cocktail' of prescription drugs, court hears

A mother hid in a loft with her baby son and told officers she had killed him after giving him a lethal cocktail of prescription drugs. The officers forced their way in to find the lifeless body of the baby. The incident is being heard in court.