An engineer from Karnataka, who happens to be the son of a retired police officer, was detained by Delhi Police officials from his home in Bagalkote last night in connection with the massive security breach in Parliament last week. He is being brought to the national capital. Saikrishna Jagali, sources said, is a friend of Manoranjan D, one of the two intruders who trespassed into the Lok Sabha chamber and set off coloured smoke. Manoranjan is among four accused in the case who now face charges under anti-terror law, Unlawful Activities (Prevention) Act. Saikrishna and Manoranjan, sources said, were batchmates at a Bengaluru engineering college. The Parliament intruder reportedly named Saikrishna during questioning.