He arrived at the airport here to embark on a three-day tour during which he would hold "direct dialogue" with the people over breaking of the JD(U)-RJD-Congress coalition and formation of the JD(U)-BJP alliance government.
Earlier, after Nitish Kumar had walked away from the Grand Alliance, Sharad Yadav had said it was a "betrayal" of the people's mandate.
Senior JD(U) leader and former Bihar minister Ramai Ram was the big name present at the airport. Former RJD legislator Ram Badan Rai was also at the airport.
"The trust of 11 crore people who gave mandate to form the Grand Alliance government in Bihar has been broken," Yadav told reporters.
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"The agreement of Gatbandhan (Grand Alliance) was for five years which has been broken...I am hurt by this." The Rajya Sabha MP said.
"I continue to stand for the 'Gathbandhan' (Grand Alliance)," he said.
Asked whether his trip did not amount to "anti-party activity", Yadav, who is the leader of the party in the Upper House, said, "I do not want to make any comment."
From the Patna airport, Sharad Yadav's convoy headed straight for Sonepur in Saran district. From there, he would go to Hajipur and stop at Muzaffarpur during the night.
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