Police found notes in a car near Joss Stone's house that allegedly read: "rob and kill Jocelyn, money in safe" and "find a river to dump her in".
24-year-old soul singer Joss Stone was the target of an alleged kidnap plot which was foiled by cops on Monday.
The notes were found alongside a cache of knives, hammers, maps, balaclavas and a Samurai sword.
Another note read: "Find Joss Stone's address on Google".
The car containing the stash was found near Joss Stone's home in Devon.
Two men appeared in court yesterday charged with conspiracy to rob and plotting GBH with intent.
Junior Bradshaw, 30 and Kevin Liverpool, 33, who live together in Manchester, were refused bail at Exeter Magistrates' Court.
They have been remanded in custody to appear at Exeter crown court on July 1.
