Delhi police has arrested four suspected terrorists from Haridwar on an input from central intelligence agencies. Briefing reporters in New Delhi, Special Commissioner, Special Cell Arvind Deep said all the four suspects were produced before court today and have been sent to 15 days police custody. <br/><br/>He said they were planning to carry out attacks in Delhi NCR, Ardh Kumbha mela in Haridwar and Rourkee to Haridwar bound trains. Mr Arvind Deep said further facts about their linkages can only be known after interrogation.