Illustrative image (Source: AP)

Hanoi (VNA) – The Brunei Internal Security Department, in cooperation with intelligence and law enforcement agencies, detained and deported four Indonesians for their involvement in extremism and terrorism activities, local media reported on April 7.

The action is part of the continuous efforts of the government to ensure that the country is free from any threat against the peace, harmony and security of the nation, the department said in the statement.

The four Indonesians were detained in an operation conducted in February under Brunei's Internal Security Act. All of them were subsequently deported and blacklisted from reentering Brunei due to their predisposition towards the ideology of self-claimed Islamic State (IS).

The Internal Security Department's investigations revealed that two of them possessed propaganda materials related to IS and all the four admitted to downloading as well as sharing IS online videos and other materials available on the Internet.

Information received from intelligence sources has also showed that one of the four was known to have been in direct contact with a suspected IS member based overseas.

Authorities of Brunei said that recent developments indicate the emergence of extremism and terrorism-related elements in the country, stressing that the government and people stay vigilant over transnational security threats.-VNA