Yadav, who is the state's youngest chief minister at 38, may find it difficult to explain Singh's presence in his ministry but he is unlikely to remove him. Singh has been a loyalist of the Yadav family for years.
"Law and order is our priority and from today its our responsibility. Till now we have been levelling allegations on others", said Yadav at a press conference after being sworn in.
"It is the responsibility of the SP government to implement its election manifesto among the people and things it said before them", he said. Yadav was administered oath by Governor B L Joshi. He took oath in presence of his father and SP chief Mulayam Singh Yadav, family members, leaders of various political parties and prominent personalities. As many as 19 ministers of Cabinet rank were also admistered oath besides 29 ministers of state. Singh's ministry has not been announced yet.