Andy Burnham's comments are the first official confirmation from UK authorities that Iran may have had a hand in the incident, which saw three white vans appearing to head towards RAF Fairford in the early hours of Sunday. Five British men in their 20s were arrested Sunday on suspicion of explosives offenses and planning an act of terror, before being released on bail a day later. Key points and original sources are listed below.

• Andy Burnham's comments are the first official confirmation from UK authorities that Iran may have had a hand in the incident, which saw three white vans appearing to head towards RAF Fairford in the early hours of Sunday.S1

• Five British men in their 20s were arrested Sunday on suspicion of explosives offenses and planning an act of terror, before being released on bail a day later.S2

• The British prime minister, Andy Burnham, said there were “strong indications” Iran played a part in the events at R.A.F. Fairford on Sunday, without providing details why.S3

• The prime minister's comments come days after the suspects were released on the 'strictest possible bail conditions'.S4