ANSWER: Convention on Mutual Legal Assistance in Criminal Matters.
Explanation:
Bay of Bengal Initiative on Multi Sectoral Technical and Economic Cooperation (BIMSTEC) convention called Convention on Mutual Legal Assistance in Criminal Matters has been approved by the Union Cabinet. MHA is designated as the Central Authority under Article 15 of the Convention. BIMSTEC comprises the following nations: Bangladesh, Bhutan, India, Myanmar, Nepal, Sri Lanka and Thailand.