The two suspects allegedly approached the teenagers and demanded the cash and jewelry, with one suspect holding a knife to the back of one of the teens, police said.

The attempted robbery happened on Park Street South at around 1:45 p.m. on Tuesday, Aug. 6.

Durham regional police say the boy is accused of participating in a Sept. 7 incident in which a group of seven youth surrounded a man and woman - both 31 - on an Oshawa, Ont., bike path and displayed weapons, including a knife, hammer and brass knuckles.