Update: Election Commission says West Bengal government has till tomorrow to transfer officials or face poll cancellation. NDTV says Mamata Banerjee-led government has reportedly agreed to transfer eight officials. More details soon.
Modi has officially filed his nomination in Vadodara, Gujarat, local media outlets report.
Narendra Modi, tipped to be India's next prime minister, sought on Saturday to reassure the nation's big Muslim minority he would respect their traditions.
Protection of majority Hindu India's secular status has surfaced as a key election issue with critics worrying Modi's Hindu nationalist rhetoric could stoke religious tensions in a country where 13 percent of the 1.2-billion population is Muslim.
In interview exerpts on India TV's website, Modi, leading the campaign of the opposition Bharatiya Janata Party (BJP), said he refused to don a skullcap presented to him by a Muslim cleric three years ago because he did not want "to hoodwink people".