A 25-year-old Whalan man has been arrested after he dislocated a police officer’s shoulder earlier this month. Police were patrolling in Tench Ave, Jamisontown, when they found a small amount of a prohibited drug and two pocket knives on the man. The man was arrested but violently resisted and injured the officer. The man was charged with possession of a prohibited drug, resisting a police officer in the execution of duty and possessing a knife in a public place. He will appear at Penrith Local Court on August 8.