Complex sentence: India refused to let the Rohingya refugees enter their Country, however later it was found that around 40,000 Rohingya's immigrants have taken shelter in Assam, West Bengal and Jammu & Kashmir.
Split into simpler sentences: India refused to let the Rohingya refugees enter their country. However, it was found that around 40,000 Rohingya's immigrants have taken shelter in Assam, West Bengal and Jammu & Kashmir.