ORO-MEDONTE, Ont. - Provincial police have charged four people in the March 2007 abduction and execution-style killing of a 21-year-old man from Markham, Ont.

Police say Jonathan Chambers was kidnapped and driven to a remote area in Oro-Medonte Township, where he was shot.

Tafari Williams, 28, of Brampton, Ont., Terrance Walker, 27, of Toronto and Gregory Millar, 31, of Mississauga, Ont., were charged Wednesday with first-degree murder.

Andrew Turner, 30, of Brampton, Ont., was charged with conspiracy to kidnap.

Police are still looking for two other suspects.

Lenworth Spence, 28, of no fixed address, is wanted for first-degree murder, and Robert Henry, 30, of Brampton, Ont., is wanted for conspiracy to kidnap.