The Hamas rulers of Gaza Strip on Tuesday lashed out at gunners who fire rockets at Israel from the Palestinian territory in violation of a seven-week-old calm, calling them Israeli collaborators. "About the rocket-firing, I think those who are responsible are those who collaborate with Israel because there is a consensus by all Palestinian groups to respect the truce," said Dr. Mahmud Zahar, a senior leader of the Hamas movement.

On Monday, a rocket fired from the Gaza Strip landed in an empty field outside the southern Israeli city of Sderot, causing no casualty or damage.

According to AFP, Zahar told a Gaza radio station that the party which fired the rocket was "linked to Israel as they provide a pretext to exercise pressure on the Palestinian people."

After the latest incident, Israel on Tuesday closed the Nahal Oz crossing to Gaza Strip that is used to ferry in fuel and the Sufa passage for food deliveries to the impoverished and blockaded territory. On his part, MP Jamal Al-Khudari, the head of the popular committee against the siege, strongly denounced Tuesday the Israeli decision to close the crossings, noting that the Gaza commercial crossings are already paralyzed despite the calm.

In a press statement received by the PIC, Khudari underlined that the Gaza crossings especially Al-Mintar (Karni) crossing must remain open around the clock for more than a year in order to end the effects of the Israeli siege imposed on the Strip two years ago. The lawmaker also pointed out that Gaza needs more than 400 trucks laden with raw materials necessary for various industrial sectors.