DERA ISMAIL KHAN: At least three police personnel sustained serious injuries when unidentified saboteurs exploded a remote-controlled bomb in a police van. Inspector Hameedullah was on his way to work when at Moryali More, the bomb exploded, seriously injuring him, his driver Abdul Latif and security guard Sajjad Hussain. They were rushed to hospital. Police officers said that the blast was caused by four kilogrammes of explosive material that was remotely detonated. Police have filed a case against unidentified persons and has started investigations. Meanwhile, two bombs exploded in Kotal Town, Kohat. However, no loss of life was reported. Sources said that two bombs rigged to the door of a religious institution detonated loudly, damaging doors and windowpanes of the institution. Police have registered a case and started investigations.