Southern India's only chief minister from PM Modi's party resigns

FILE PHOTO: India's ruling Bharatiya Janata Party (BJP) leader B. S. Yeddyurappa flashes the victory sign after taking oath as Chief Minister of the southern state of Karnataka inside the governor's house in Bengaluru, India, May 17, 2018. REUTERS/Abhishek N. Chinnappa/File Photo

BENGALURU (Reuters) - The chief minister of India's Karnataka, the only state ruled by Prime Minister Narendra Modi's party in the country's prosperous south, resigned on Monday in the latest political shake-up in the Hindu nationalist group.

B.S. Yediyurappa, a four-time chief minister of the state, home to India's technology capital of Bengaluru, had helped the Bharatiya Janata Party (BJP) form its first government in India's southern region in 2008.