Joss Stone -- Suspect Pleads 'Not Guilty' in Samurai Sword Murder Plot

One of the men arrested in connection with an alleged plot to kidnap and murder soul singer Joss Stone pled "not guilty" this morning.

As TMZ previously reported, Kevin Liverpool and his alleged accomplice Junior Bradshaw were arrested back in June near Stone's property outside London. After searching their car, police claim to have found a samurai sword, rope, and a body bag ... as well as maps and aerial photos of Stone's house.

The men were charged with conspiracy to commit murder, conspiracy to commit robbery, and conspiracy to commit grievous bodily harm.

Bradshaw has yet to enter a plea. Both men were ordered to be kept under lock and key until their trial next year.