An activist from the Philippines was detained and questioned for nearly three hours yesterday as the authorities tightened security at Chek Lap Kok airport.
Farmer Danilo Ramos, 49, secretary-general of the Manila-based Asian Peasant Coalition, said he was asked to stand aside at immigration and sent to a room for questioning.
Six other Filipinos on the same Cebu Pacific flight had a trouble-free entry, said Eman Villanueva, spokesman of the Asian Migrants Co-ordinating Body.
The news came as passengers on a Thai Airways and Cathay Pacific flight from Singapore last night said they had been told before landing yesterday afternoon that they should have their passports ready for inspection - by police - before clearing customs.
Mr Ramos is the fourth leading activist to be questioned at the airport.
Three other Filipinos were held on Thursday for 61/2 hours.
