London, March 22: Kevin Liverpool, 35, and Junior Bradshaw, 32, accused of planning to rob and kill singer Joss Stone had also written names of singer Beyonce Knowles and members of Girls Aloud in their kidnap diary, reports dailystar.co.uk.
The diary entries included - chop off arm, leg crossbow and decapitate them.
The diary was seized from the Longsight flat in Manchester Liverpool and Bradshaw shared. The jury at Exeter Crown Court heard how Liverpool had written detailed notes on Stone's background, career and album sales.
The court also heard how detectives found reminders to buy a semi-automatic gun, a silencer, infra-red equipment and a Ninja sword for the alleged attack in Devon.