Yesterday, German airline Lufthansa said they will no longer fly over the Sinai peninsula 'as long as the cause for [the] crash has not been clarified'.
A spokeswoman for the airline said that 'security is our highest priority' claiming that they would use detours to service airports in the region.
The Israeli Defence Forces confirmed they had intelligence assets in the region at the time of the crash.
According to a statement: 'Since this morning the IDF assisted with aerial surveillance in the efforts to locate the Russian airplane that lost contact over the Sinai Peninsula.
Its passengers included a 10-month-old baby girl flying home with her parents, as well as two siblings aged two and three.
Numerous other children aged under 11 also perished in the disaster, according to a manifest of passengers published by the Association of Tour Operators of Russia.
But anything above 8,000 or 9,000 feet is out of the range of the weapons that they’ve got.'He said the area where the jet crashed is a known location for groups affiliated to Al Qaeda and ISIS, but it was highly unlikely that a ground-based weapon was responsible for the in-flight break up.
However, it has emerged that the aircraft broke up mid-air scattering debris and bodies over a wide area.
This morning, Egyptian authorities recovered the body of a three-year-old girl some five miles from the crash scene.
Heart-breaking: This 10-month-old baby (pictured, left, gazing out of an airport window ahead of the disaster) was among those killed - as were Aleksei Gromov and his wife Tatiana (both right).
It is unclear whether Mrs Gromov was pregnant at the time of the deadly crash Haunting images: Viktoria Sevryukova (pictured, left, in an Instagram snap) also perished in the crash - as did Yury Shein and his young daughter Anastasia (pictured, right, boarding the Metrojet aircraft not long before it plummeted to the ground, killing everyone on board)She said: 'Our aircraft was in full working order, our crew was experienced, our pilot had a great deal of flying experience, so we don't know (what caused the crash).' They stressed that human error was not at fault for the crash.