"In accordance with the international rules of the investigation of such incidents, the state, where the aircraft engine was produced, may be involved in the investigation. Given that the engine of the Russian aircraft was manufactured by a US company, the Americans can participate through the National Transportation Safety if they demand it. This is only for the technical side of the investigation," Mohamed Hossam Kamal told the Al Ahram news portal.

On Tuesday, FBI public affairs officer Joshua Campbell told Sputnik the US intelligence agency had offered assistance to Egypt and Russia in the investigation into the A321 crash tragedy.

If the United States insists that the FBI should be involved in the probe, the Egypt-led investigation will not permit it, as Washington has "no right" for this, he stressed.

On October 31, the Airbus A321 passenger plane operated by Russian airline Kogalymavia carrying 224 people, crashed in the Sinai Peninsula en route from Sharm el-Sheikh to St. Petersburg. All people on board died in the biggest disaster in the history of Russian civil aviation.

Shortly after the crash, Moscow and Cairo reached an understanding on the investigation; and an international Egypt-led probe was launched. The investigative committee comprises Egypt, Russia and France, assisted by Ireland and Germany.