If you heard the police helicopter up last night over Westfield this is why - and contrary to social media reports the suspect has not been arrested.

Police are appealing for witnesses and information after an armed robbery at a Co-Op in the Fosseway,at 9pm on Tuesday 21 July.

A man threatened a woman store worker with what's described as a handgun, forcing her to hand over cash.

He then made off in a red Citroen SpaceTourer MPV and the woman called police.

Officers responded immediately, with patrolling officers supported by armed response teams and the National Police Air Service helicopter in a search of the area.

There was no trace of the suspect vehicle and enquiries continue.

The suspect is described as a white man, about 6ft tall, wearing a black mask, baseball cap and hoody with a hi-vis over the top.

If you were in the Fosseway area at the time, or have any other information which could help the investigation, get in touch through www.avonandsomerset.police.uk/contact or call 101 quoting reference 5220162467. Alternatively ring the independent charity Crimestoppers 100 per cent anonymously on 0800 555 111. They never ask your name or trace your call.