At app. 11:30am on Monday 31 May 2010, the Israeli occupation forces (IOF), positioned in the vicinity of Erez crossing at the northern border between Gaza and Israel, continued its sporadic fire on Palestinian civilians who were 100 meters away from the border fence near the industrial area. These civilians were collecting rubble from destroyed buildings in the areato sell it to brick factories, which recycle it into bricks, or to people who need to use it for construction. This is the only source of materials for making bricks and concrete for construction that is available in the Gaza Strip, which suffers from an acute shortage of construction materials due the Israeli siege. No casualties or injuries were reported.