Congress president Sonia Gandhi has put off her election rallies here and in Puducherry scheduled for today in view of hospitalisation of Tamil Nadu Chief Minister M Karunanidhi, a top Congress leader said.     

Senior Congress leader Ghulam Nabi Azad told reporters here he visited the DMK president, who is undergoing treatment for fever at Apollo hospital since Sunday, and doctors had advised him not to participate in the meetings.     

The new date will be announced soon," he said.However, police sources cited security reasons also for change in schedule, as pro-Sri Lankan Tamil outfits had threatened to stage demonstrations and show black flags to Gandhi over UPA's alleged failure to ensure a ceasefire in Sri Lanka.     

Ever since the Sri Lankan Army intensified its offensive against LTTE and confined it to a small strip of land in the embattled northern part, pro-LTTE outfits have been staging demonstrations, demanding an immediate ceasefire.     

Gandhi was originally scheduled to arrive in Chennai, fly to Puducherry and return here to address a joint rally later in the afternoon in support of Congress and DMK candidates for the May 13 Lok Sabha polls.     

Under an electoral pact, DMK, a constituent of UPA, has allotted 16 seats to the Congress, including the lone seat in neighbouring Puducherry.

Meanwhile, V Narayanasamy, AICC general secretary and the party nominee for the lone Lok Sabha seat in Puducherry, told reporters that he had received information that Sonia Gandhi's rally in Puducherry had been 'postponed' for security reasons.     

A fresh date for her election rally in Puducherry will be announced soon, he said.

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