Egypt reportedly warned Israel of impending violence three days before Hamas' fatal cross-border attack, according to the chairman of a US congressional subcommittee.
Michael McCaul, chairman of the House Foreign Affairs Committee, briefed reporters about the reported threat.
Those rumors were called "absolutely false" by Israeli Prime Minister Benjamin Netanyahu.
The Israeli intelligence community is being investigated for its role in the bloodiest strike carried out by Palestinian militants in Israel in its 75-year history.
Mr. McCaul told reporters on Wednesday that members were briefed behind closed doors by intelligence agencies about the issue in the Middle East. The meeting followed a closed-door intelligence briefing for lawmakers on Tuesday.
Adding, "I don't want to get too much into classified, but a warning was given," the Texas Republican said. "I think the question was at what level."
This week, an Egyptian intelligence officer said Cairo had frequently warned Israel that "something big" was being plotted from Gaza. This was reported by the Associated Press news agency.
We have told them that the issue is about to explode in a major way, and that it will do so very soon. The individual, who spoke on the condition of anonymity, said the warnings were ignored by the government.
The Egyptian official claimed that Israel had downplayed the threat posed by Gaza in order to divert attention away from the West Bank.
The Financial Times cites two anonymous individuals familiar with the situation as saying that there was no concrete evidence of an impending attack.
On Wednesday, Prime Minister Netanyahu dismissed as "totally fake news" any reports that Israel had received a specific warning before the deadly raid.
Egypt, which regulates passage to and from Gaza, is frequently in the middle of disputes between Israel and Hamas.
On Saturday, terrorists from the ground, the air, and the sea launched a coordinated attack on the Gaza security barrier.
The number of Israelis killed by Hamas strikes has risen to 1,200. Israel's airstrikes on Gaza have killed over a thousand civilians.
In retaliation, Israel has started bombing Hamas targets in Gaza, where locals report being without power due to the shutdown of their sole power plant due to a lack of fuel.
Meanwhile, Hamas has spoken out against Vice President Joe Biden's comments from Tuesday in which he said Israel had a responsibility to respond to the attacks, which he described as a "act of sheer evil."
The Palestinian organization called Mr. Biden's comments "inflammatory" and claimed they would only serve to increase tensions in the Gaza Strip.
A US aircraft carrier, ships, and jets were sent to the eastern Mediterranean after the US stated it would provide Israel with extra weapons and ammunition in response to the Hamas attack.