Swaraj Abhiyan chief Yogendra Yadav and four of his associates were detained and allegedly manhandled by police on Saturday in Tiruvannamalai district when they were on their way to meet protesting farmers against the proposed eight-lane expressway between Chennai and Salem.

In a series of tweets, the psephologist-turned-politician claimed besides being prevented from going to meet the farmers, his phone was snatched, he was manhandled and pushed into a police van.