Delhi Police Special Cell arrested a Lashkar-e-Taiba (LeT) operative from Uttar Pradesh, officials said on Monday."He has worked for Indian Mujahideen (IM) and is wanted in several terrorist cases," Special Commissioner of Police (Special Cell) S.N. Srivastava told IANS.The alleged terrorist, identified as Irfan, 50, was arrested last week from Bahraich district in Uttar Pradesh, officials said.