Refusing to be drawn into a controversy over Bihar governor Buta Singh clipping the wings of his Advisor Arun Pathak, Railway Minister and Rashtriya Janata Dal chief Lalu Prasad Yadav on Saturday said it was the governor's 'prerogative'.

• Yadav wants Buta Singh recalled

"It is the Governor's prerogative. Pathak is his advisor," Lalu told reporters in Delhi when asked about Singh's move.He added that Pathak had not been removed from his post and continued to remain the governor's advisor.

• After NDA, CPI demands recall of Buta Singh

Amid the controversy over his letter to the railway minister, seeking transfer of an official, Singh stripped Pathak, of his official powers by withdrawing key departments, including home, finance, power and personnel.

• BJP condemns Buta Singh's recommendation of rail official's transfer

Asked about the National Democratic Alliance's demand that Singh be recalled over the controversial letter, Lalu said "There are thousands of such letters from governors and today's leaders."