A day after the sketches of a suspect in the October 29 Delhi blasts were released, police detained a similar-looking youth in Ghaziabad on Thursday.
The man, identified as Nawab, was being interrogated by the Uttar Pradesh Special Task Force and Intelligence officials, SSP Ghaziabad Jainarayan Singh said.
Police had been combing the capital region and had sent teams to nearby states to investigate the case.