Mathura/Bangalore/Varanasi, Mar 25: Prime ministerial candidate of the Bharatiya Janata Party (BJP), L K Advani has reiterated that Prime Minister Manmohan Singh is the weakest Prime Minister of India.

While addressing a public rally in Mathura, Advani lashed out at the Congress saying the party chief Sonia Gandhi wields the real power.

"From Jawaharlal Nehru till now, I have seen all Prime Ministers very closely. But I have not seen a weak Prime Minister like Manmohan Singh. I call him a weak PM because in a democracy, the most important address is of the Prime Minister, which is 7 Race Course Road, but for the first time from 2004, it is not the most important address. Now the most important address is 10 Janpath, the residence of Sonia Gandhi," said Advani.

Advani''s sharp remarks came after Singh said Advani was responsible for the demolition of the Babri Masjid in
1992.

While the BJP has projected Advani as its prime ministerial candidate, the Congress has gone on record that incumbent Prime Minister Manmohan Singh would fill the top post, if voted back.

Meanwhile, BJP leader and Karnataka Chief Minister B S Yediyurappa said in Bangalore that he would file a complaint with the Election Commission against Sonia Gandhi.

"I will file a complaint against Sonia Gandhi. She came to our state and criticised the State Government, in her capacity as president of Congress party. This party has not cared for our state while it has provided 300-400 million rupees for the development of Andhra Pradesh)," said Yediyurappa.

Sonia Gandhi kicked off her election campaign in Karnataka from Davangere on Mondayby targeting the State''s ruling BJP Government.

Heated exchanges between political leaders are on high as India prepares to hold elections between April 16 and May 13, in which 714 million people will cast their votes to elect a new Central Governemnt.

Meanwhile in Varanasi, senior leader of BJP, Murli Manohar Joshi filed his nomination for the upcoming general elections.

Joshi handed over his papers to the District Electoral Officer and District Magistrate of Varanasi, Ajay Kumar Upadhyay.

He is the first candidate to file nomination from the constituency that will go to polls in the first phase on April 16.

Joshi filed his nomination after an FIR was lodged against him for allegedly violating prohibitory orders and the model code of conduct. (ANI)