Investigators probing the Delhi High Court blast case have asked help of foreign intelligence agencies to crack the case. Our correspondent quoting sources reports, the investigators were in regular touch with foreign agencies, particularly of the United States, to get any information related to the blast. The sleuths are also taking help from the foreign agencies to find out the origin of the emails claiming responsibility for the blast which has claimed 13 lives. Home Minister P Chidambaram on Friday had said that agencies of foreign countries had been contacted to crack the case. He had said the security agencies were working round-the-clock as we are seeking help from other agencies from around the world too. Mr Chidambaram had also said all information and leads were being taken seriously and pursued by the investigators.