Twelve people have been arrested by police probing a crash on the A66 which killed five joyriders and two police officers.
PC Matthew Blades, 37, and PC Tom Clough, 38, died early on Saturday when a Volkswagen Passat travelling the wrong way down the dual carriageway near Middlesbrough crashed head-on into their marked armed response vehicle.
Nine men and three women, aged between 19 and 61, have now been arrested on suspicion of offences ranging from possession of a firearm to participating in the activities of an organised crime group.
Cleveland Police received several reports of the Volkswagen Passat being driven dangerously on Saturday.
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