Armed men bombed a natural gas pipeline in Egypt's Arish late Sunday night, a local security source told Xinhua.

The bombed pipeline was about 20 km west of Arish, capital of North Sinai, a hub of Egypt's natural gas exports to Israel and Jordan. Flames as high as 20 meters was seen from faraway.

The incident, the ninth bombing attack on the pipelines in Arish since February, came as Egyptians brace for their historical parliamentary polls on Monday.