Listen: Anti-terrorism boss on Sheffield raidspublished at 09:45 Greenwich Mean Time 20 December 2017
Mick Lunney
BBC Local Live, Sheffield
Counter-terrorism police say yesterday's raids in Sheffield and Chesterfield were about public safety.
A number of addresses were raided in an effort to thwart a suspected terrorist attack being planned for the festive period. Four people were arrested.
Head of Investigations at North East Counter Terrorism, Simon Atkinson has this message for people concerned about the latest arrests: