Extensive enquiries have so far failed to identify remains of man discovered in Glenrothes.
A 40-year-man has been charged following incident at Glenrothes supermarket on Wednesday.
Police have launched an appeal for information after the discovery in Glenrothes on Thursday.
The criminals targeted Leslie Bike Shop in Glenrothes during the early hours of Monday.
The boys are from Dundee, Musselburgh and Glenrothes and are aged between 15 and 17.