A letter from CAIR staff attorney Maha Sayed dated 20 July says: "As Mr Radwan took his designated seat, a female flight attendant loudly announced: 'Mohamed Ahmed, seat 25-A: I will be watching you.'"

"The flight attendant was positioned in the aisle towards the rear of the plane and passengers in the surround vicinity heard her statement.

"After approximately one minute, the flight attendant repeated the announcement, this time stating: 'Mohamed Ahmed, that is a very long name, seat 25-A, 'I will be watching you'."

Mr Radwan then approached the flight attendant and questioned her about her remarks. She replied that she was watching everyone, the letter says, adding that Mr Radwan was being “too sensitive”.

Following further conversations with American Airlines staff about the attendant’s remarks, Mr Radwan was eventually escorted off the aircraft.