By BBC News reporter Ethirajan Anbarasan - who interviewed Ahmed Ali
Mr Ali was looking frail, anxious and worried. He was surprised to hear that we had come all the way from London to talk to him.
He preferred to speak in his native Bengali language than English and he sounded very worried about his daughter's future. He couldn't explain how she got radicalised. But at the same time he also questioned how British immigration allowed her to travel on someone else's passport.
Living far away from the media gaze, Mr Ali seems to be living a quiet life with his second wife in Dawrai, a picturesque village in the district of Sunamganj.
His house was surrounded by coconut and mango trees and lush green paddy fields. A single track road, most of it potholed dirt track, leads to the village. Chickens and other birds were chirping all the time.