The West Bengal Police arrested Trinamool Congress leader Ajit Maity from the trouble-torn Sandeshkhali in North 24 Parganas district on the charges of land grabbing from villagers, an officer said on Monday. Ajit Maity, considered a close aide of absconding TMC strongman Shahjahan Sheikh, was detained on Sunday evening from the residence of a civic volunteer where he had locked himself for over four hours after being chased by villagers, he said.