West Yorkshire Police officers in Leeds received a frightening reminder of the unknown dangers the police face on a daily basis after a vehicle failed to stop for the force late on Monday night.
After the vehicle had failed to stop, officers from the WYP Roads Policing Unit recovered a huge knife, balaclava and crowbar left behind by the suspects. They posted an image of the items on Twitter in the early hours of Tuesday morning.
Police said: "Vehicle fails to stop for us in Leeds. The occupants left their belongings behind. Our officers never know what danger they face on a daily basis."