Robert Serry, the United Nations Special Coordinator for the Middle East Peace Process, condemned Palestinians for breaking the agreed-to ceasefire, which was supposed to last for 72 hours.
"If corroborated, this would constitute a serious violation of the humanitarian ceasefire in place since 8 am this morning by Gazan militant factions, which should be condemned in the strongest terms," the UN statement said.
He said he is concerned about what the results of breaking the ceasefire could be for Gaza.
The statement said that Serry called on the Palestinian parties that agreed to the ceasefire to reaffirm their commitment to the ceasefire as soon as possible. "He [Serry] is deeply concerned regarding the serious consequences on the ground that could arise as a result of this incident."