New Delhi, May 26 (IANS): Amid the political slugfest over migrant workers and arrest of UP Congress chief Ajay Kumar Lallu, Congress General Secretary Priyanka Gandhi, here on Tuesday, termed his arrest undemocratic and violation of humanitarian principle, and demanded that he be released immediately.

"Throwing him into prison on baseless charges during a pandemic reveals the undemocratic and opportunistic mindset of the Yogi government and violates all humanitarian principles," Priyanka Gandhi tweeted.

"We demand justice for him and will continue to fight until it's delivered," she said and also tweeted a video clip showing Lallu providing help to migrants.

"Having lived a life of struggle, perseverance and grit, the UP Congress chief knows well the suffering of displaced and marginalised people. He has fought for them steadfastly throughout his career," tweeted Priyanka.

Lallu was arrested soon after he was granted bail in another case in Agra on Wednesday. Earlier, he had been arrested in Agra on Tuesday for protesting against the government's refusal to allow movement of buses in the state.

He was arrested in a case of fraud and forgery, related to bungling in list of buses submitted by the Congress to the UP government for bringing migrant workers.