this is bbc news. i'm reeta chakrabarti. the headlines at 20:00: police say they've disrupted an alleged terror plot, that could have been carried out over christmas. four men have been arrested in sheffield and chesterfield. jailed for 20 years — the man who threw acid into a crowded nightclub in east london. social media companies are taken to task by mps, as they're accused of not doing enough to tackle hate crime. fears for the future of the retailer toys r us, as a rescue plan is put to its creditors. and in the next hour: us accident investigators reveal a passenger train was travelling at twice the speed limit before it crashed in washington state. three people died, and more than 70 others were injured, when the amtrak express came off the rails during the morning rush hour. and we'll be hearing about the world's first vending machine for the homeless — a nottingham—based innovation which provides essentials to those who need them 2a hours a day.

good evening and welcome to bbc news. police have arrested four men in south yorkshire and derbyshire, as they swooped in to disrupt a suspected islamist terror plot. it's thought it was being planned for christmas. armed officers made the arrests early this morning at four separate addresses, using stun grenades. the army bomb disposal unit was called to a row of shops in chesterfield. more than a hundred people were evacuated from their homes. tonight, the bomb squad has just arrived at another address in sheffield. with the latest, here's danny savage. sh i tiffkfi' shit;