The operation appears to have been planned around one car - believed to be an Audi.
It appears to have been heading off the M62 at around 17:30 GMT on Monday, heading towards Huddersfield, when it was stopped by at least one unmarked police car that was following it. The car that was stopped, which is still there this morning, was boxed in. Shortly after this a shot was fired and a man died.
A close-up photo shows the marks from what appears to be three bullets in the Audi's windscreen and a side window that has been smashed.
It appears the police had information that he was carrying a firearm in the car and according to the police one was found after he was shot. This fact alone was sufficient to prompt three shots from someone who clearly knew what they were doing and didn't miss. To me that seems regrettable but unless you are going to let firearms get out of control, necessary. I'm sure Americans will be horrified that the mere fact a man was carrying a gun in his car could prompt such a police response.