UN special envoy to the Middle East Robert Serry expressed concern Wednesday over the "volatile situation" in Israel and Gaza after rockets were fired from the coastal territory into southern Israel on Tuesday and Wednesday.

"It is of paramount importance to refrain from violence in this tense atmosphere and for parties to work constructively in addressing the underlying issues," Serry stated.

He condemned the "indiscriminate firing of rockets into civilian areas" and called on Israel to exercise restraint, saying that an escalation of hostilities could endanger the improvements made in easing the blockade of Gaza in the aftermath of the truce signed to end Operation Pillar of Defense in November.

Serry stated that the UN would support Egyptian efforts to restore calm and fully implement the ceasefire agreement.

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