Three suspected members of a Sikh extremist group on Interpol's Red Notice watchlist were arrested during a joint operation by the Philippine government agencies this month, according to an official.

Officers from the Philippine Bureau of Immigration, the Cybercrime Investigation and Coordinating Center (CICC) and the Military Intelligence Group arrested suspected members of the Sikh extremist group - all Indian nationals in their 20s - in the central Philippine city of Iloilo during a joint operation, CICC Executive Director Alexander Ramos said on Monday.