BBC timeline : Arrests Over 'Bomb Plot'

TIMELINE: ARRESTS OVER 'BOMB PLOT'

10 August: 24 people arrested in London, High Wycombe in Buckinghamshire, and Birmingham

11 August: One released by police without charge

15 August: Another person arrested in Thames Valley area

16 August: Police given extra time to question suspects; one person held in Thames Valley area released without charge

21 August: Police have until this date to question two of the suspects arrested on 10 August

23 August: Police have until this date to question 21 of the suspects arrested on 10 August