There are claims that parts for what would be the first-ever gun produced in Britain by 3D printing, may have been seized by police in Manchester.
They were recovered during a week long operation against organised crime.
Detectives have sent the items for testing, but the owner of the shop where they were found strongly denies they were for a firearm, saying they were in fact parts from the printer itself.
This report from Adam McClean
More top news
Jeremy Corbyn addressed allegations of bullying within the Labour Party as he launched his campaign to remain as leader in Salford.
Turning wetter and fresher on Sunday
Humid, dry and warm start to the weekend, but turning fresher and wetter on Sunday afternoon