Egypt's intelligence chief, Abbas Kamal, visited Israel on September 26, 2023, and warned that it appears that Hamas is preparing for a major attack. He urged Israel to ease tensions and warned: "If you don't change course, Gaza is going to blow up in your face."
The warning did not include a date or specific details about the October 7 attack, and Israeli officials later disputed whether a direct warning had been received.
The report says that many sources believed that Kamal's own visit should have raised the alarm, with a former Israeli official saying: "The messenger was the message."
Source: The Atlantic