Here is a recap of everything we know so far.

Emergency services were called to a two-vehicle collision near the cemetery gates in London Road at around 8.25pm on Sunday.

It was reported that a man was seen leaving the collision holding what was described as a handgun.

The scene of the initial collision (Image: East Anglia News Service)

When officers arrived, one of the cars – a Mercedes van - was badly damaged, the airbag had gone off, and there was no one in the car.

The other car – a Honda Jazz – was damaged on one side.

The driver of the Honda suffered minor injuries and declined medical treatment in hospital.

Police tape left at the scene near the cemetery gates (Image: East Anglia News Service)

Police received several reports from members of the public in the area that they had seen a man carrying a black handgun on London Road heading towards Sainsbury’s.

He was then seen on the southbound carriageway of the A11, near the Brandon Road roundabout, walking in a northbound direction.

Armed response officers were deployed to the A11.

The man was approached by officers........

© Eastern Daily Press