Security has been strengthened at the Sri Lankan Deputy High Commission office, the Mahabodhi Society and Bank of Ceylon all located in Chennai following an attack on two Indian Post Offices on Tuesday, The Hindu reported.

Police said armed security personnel were deployed to guard vital installations, particularly those connected to Sri Lanka.

Tuesday’s attack is alleged to be the handiwork of a Tamil organisation that is opposed to India’s participation in next month’s Commonwealth Heads of Government Meeting (CHOGM) being held in Colombo.