In the modern era, the migration of the Bengali Hindus began during the British colonial era. The Bengali Hindus migrants to Assam were mostly government officials, doctors, lawyers, and teachers by profession. They also settled in parts of present Bihar and Jharkhand, which were at the time included in the Presidency of Bengal. After the Partition of India and subsequent incidents of anti-Hindu violence in East Pakistan and Bangladesh (for example, during the 1971 Bangladesh genocide), waves of millions of Bengali Hindu refugees migrated to Assam, Bihar, Jharkhand, Tripura, Orissa, Chhattisgarh, Maharashtra, Uttarakhand and the Andaman and Nicobar Islands. Over the years, professionals migrated from Kolkata to cities like New Delhi, Mumbai, Bangalore and Pune, as well as overseas.