Union Home Minister Amit Shah will flag off the fourth round of the BJP's 'Poriborton Yatra' from Cooch Behar in poll-bound West Bengal and also address a public meeting on Thursday, a party statement said.

He will address the rally at the Thakurbari ground, the party's chief spokesperson Anil Baluni said.

Later in the evening, Shah will address a meeting of the party's social media volunteers in Kolkata.

His earlier trip to the state was postponed following violence during the farmers' tractor rally in the national capital on Republic Day.