Speaking in Parliament, Wickremesinghe said legal action will be taken against all suspects who were connected to the nine suicide attacks which targeted churches and luxury hotels and there was information that those arrested had direct or indirect connections with the bombings, Xinhua news agency reported.
Meanwhile, 99 people were also in custody over suspicion for having links with the terrorists.
Wickremesinghe said security forces were continuing with their search operations and investigations were ongoing.