Police have released CCTV as part of a manhunt after a man reportedly "pulled a pin on a hand grenade" while on a train.
The passenger boarded a train from Skegness to Nottingham on Sunday, May 18, and was asked by a guard to stop swearing.
This is a breaking news story. Follow us on Google News, Flipboard, Apple News, Twitter, Facebook or visit The Mirror homepage.
READ MORE: Alex Cairnie search UPDATES: Hundreds of military personnel hunt for missing soldier
READ MORE: Driver, 17, and two pals killed in horrific Audi crash day after he passed test
You may also like
Joao Pedro shows true colours after stunning Chelsea opener in Fluminense Club World Cup clash
Cameron Norrie makes thoughts on Carlos Alcaraz clear after Wimbledon demolition
Tourists left stunned as popular beach stormed by Spanish Navy
Brics rejects EU's unilateral carbon border tax proposal
Trump doubles down on 10 per cent tariff for BRICS; threatens 200 per cent tariff on pharma