The arrest came a day after President Trump said the US had withdrawn all B-1 bombers from RAF Fairford because of 'threats' he believed were linked to Tehran. A 22-year-old from London was the seventh person to be arrested by the counterterrorism police investigating an incident at R.A.F. Key points and original sources are listed below.

• The arrest came a day after President Trump said the US had withdrawn all B-1 bombers from RAF Fairford because of 'threats' he believed were linked to Tehran.S1

• A 22-year-old from London was the seventh person to be arrested by the counterterrorism police investigating an incident at R.A.F. Fairford last month.S2

• Five British men were detained near the perimeter of the base in the early hours of Sept. 27, and a British-Iranian man was arrested in London on ThursdayS3

• British police have arrested a 22-year-old man in London on suspicion of a terror offense linked to IranS4