New Delhi, Nov. 24 -- India has issued a strong demarche to the Chinese side, in Beijing and in Delhi, over the incident of the Indian national Prema Wangjom Thongdok, who hails from Arunachal Pradesh, facing harassment from Chinese immigration officials at Shanghai Pudong Airport, sources said on Monday.

The sources said India's Consulate in Shanghai also took up the matter locally and extended assistance to the stranded passenger.

It was stressed that the passenger had been detained on ludicrous grounds. Arunachal Pradesh is indisputably Indian territory and its residents are perfectly entitled to hold and travel with Indian passports.

It has also been highlighted that the actions of the Chinese authorities are in contravention of th...