On Nitish Kumar's 67th birthday, 10 facts about his life and political career:
Nitish Kumar's nickname is Munna. He is also referred to as Sushasan Babu.
Nitish Kumar's father Kabiraj Ram Lakhan Singh was a freedom fighter and also an Ayurvedic practitioner.
Nitish Kumar is a mechanical engineer who joined the Bihar State Electricity Board before entering into politics.
Nitish Kumar stepped into politics in 1971 as a member of Ram Manohar Lohia's youth wing called Samjawadi Yuwajan Sabha.
Nitish Kumar was an active participant in the Jayaprakash Narayan's movement or JP movement between 1974 and 1977.
He was elected to the Bihar assembly for the first time in 1985.
Nitish Kumar became president of the Yuva Lok Dal in 1987 and secretary general of Janata Dal two years later.
He entered the Lok Sabha in 1989 and went on to win five parliamentary elections from Bihar.
Nitish Kumar became the chief minister of Bihar for the first time in 2000 but lasted only for a week. He became 31st Chief Minister of Bihar in 2005 and has secured the place since then, with Jitan Ram Manjhi taking up the post from May 2014 to February 2015.
Nitish Kumar is a widower and has one son Nishant.