Rashtriya Lok Samata Party (RLSP) leader Upendra Kushwaha on Monday quit the BJP-led National Democratic Alliance (NDA) and resigned as a Minister in the Modi government.

Kushwaha, who has been at loggerheads with the BJP for some time, sent his resignation to Prime Minister Narendra Modi saying he (Modi) had failed to live up to the promises made to the people of Bihar.

"Having served in your Council of Minister for the last 55 months, I stand dejected and betrayed by your leadership," he said in a letter sent to Modi.

"There has been a fundamental conflict in what you have promised to the people before elections and what you have actually delivered after coming to power."

Kushwaha was a Minister of State for Human Resource Development in the Modi government.-IANS