A former Sri Lankan soldier was among four suspects arrested last week in relation to anti-Muslim attacks in Kandy.
The suspects were arrested by Terrorist Investigation Division (TID) officers, Adaderana reports.
Politicians, police officers and Buddhist monks are reported to have taken part in the attacks last month, which saw Sinhala mobs set fire to two mosques as well as Muslim businesses and homes in the areas, with reports that at least 8 homes and 50 businesses were burnt in the attacks.