Leader of the Opposition in West Bengal Assembly Suryakanta Mishra today expressed doubt whether Mamata Banerjee would be able to complete her term as chief minister since she was "overstraining" by running the administration almost single-handedly.

"My concern is whether she will be able to continue for five years at the helm of affairs. It is an area of concern for me," the senior CPI(M) leader said in reply to a question at a 'meet the press' organised by the Agartala Press Club here.

"Then if she cannot run the administration for five years, there will be a constitutional crisis...She has become very restless and wants to handle most of the administrative work alone. She herself said that she sleeps for two hours only which is not a healthy sign," Mishra said sarcastically.

"If the chief minister also wants do the work of a BDO then it will be difficult for her...I wish her good health and mental health," he said.

Expressing apprehension that the forthcoming panchayat elections in West Bengal might not be peaceful, free and fair, Mishra said, "My concern became acute when opposition candidates could not file their nominations and even some candidates of the ruling Trinamool Congress also could not do so."

He said the State Election Commission had proposed to hold the panchayat elections in three days but the chief minister wanted to hold the elections in one day.

On February 4, former West Bengal chief minister Buddhadeb Bhattacharjee has questioned his successor Mamata Banerjee's honesty, prompting an angry rebuttal from Trinamool Congress which demanded an apology from the CPI-M veteran and slapped a legal notice on him.