Dhaka, Feb. 18 -- Mahdi Hasan, a leader of the anti-discrimination movement from Habiganj who alleged he was "detained" at an airport in India, has returned to Bangladesh.

Speaking after arriving home on Wednesday afternoon, he claimed he was harassed at an Indian airport and also faced questioning at Dhaka airport.

Mahdi, accused of threatening police by saying he had "burned Baniachong Police Station and set an SI on fire", had travelled to India to complete visa formalities for Finland.

A video of him at a visa centre there circulated on social media on Tuesday.

He alleged that police detained and questioned him at Delhi airport before sending him to Dhaka at 12:40pm on Wednesday.

He added that the reason for his detention was his...