People in possession of illegal knives and guns are being urged to surrender them to police during a 10 day campaign.
Weapons can be handed in at the following stations from today (February 22) until Saturday, March 4.
The police stations taking part are:
Leeds District HQ, Elland Road Police Station, Elland Road, Leeds, LS11 8BU - open daily, 8am-10pm.
Stainbeck Police Station, Stainbeck Lane, Leeds, LS7 3QU - open daily, 8am-10pm.
Bradford Police Station, Trafalgar House, Nelson Street, Bradford, BD5 0DX - open daily, 8am-midnight.
Keighley Police Station, Airedale House, Royd Ings Avenue, Keighley, BD21 4BZ - open daily, 8am-8pm.
Halifax Police Station, Richmond Close, Halifax, HX1 5TW - open daily, 7am-11pm.
Huddersfield Police Station, Castlegate, Huddersfield, HD1 2NJ - open daily, 8am-10pm.
Dewsbury Police Station, Aldams Road, Dewsbury, WF12 8AR - open Monday to Saturday, 8am-8pm, and Sunday, 8am-6pm.
Wakefield District Headquarters, Havertop Lane, Normanton, WF6 1FD - open Monday to Saturday, 8am-10pm.