Unidentified gunmen on Friday blew up a gas pipeline feeding the area of heavy industries of North Sinai in Egypt. Egypt’s Middle east news agency (MENA) quoted a security source as saying that the explosion was 40 kilometers south of the city of Arish.MENA said that the pipeline was blown up 17 time since February 2011. It added that the explosions stopped during the reign of ousted president Mohamed Morsy to reoccur on December 31.