The National Investigation Agency (NIA) has detained five persons over suspected links with terror outfit ISIS. They were detained at Panur in Kannur district of Kerala. Sources said, the detainees, who hail from Vadakara in Kozhikode, were taken into custody after tracking their mobile signals. The five were holding a meeting suspected to be part of an illegal plot.<br/>The investigation is on by the police and NIA about the missing 21 people from north Kerala who are suspected to have joined ISIS.