"Egypt will participate in this international conference as it is one of the countries affected by terrorism," the high-ranking diplomatic source, who requested anonymity, told The Anadolu Agency.
The source hailed Washington's call as "positive," adding that "extremism is a global affliction that requires the mobilization of international efforts."
During his participation in last week's anti-terror march in Paris, U.S. Attorney General Eric Holder announced that President Barack Obama plans to invite U.S. allies to an international conference in Washington on ways to combat violence and extremism around the world.
The conference is slated for Feb. 18.
This is the second move by the U.S. on the front of "combating extremism," after the establishment of an international coalition to wage air raids on the ISIL group.
The call came in the wake of the deadly Paris attack on the headquarters of Charlie Hebdo - a satirical magazine known for printing offensive material, including derogatory cartoons of the Prophet Muhammad – which claimed the lives of 12 people.
For months, Egypt has been cracking down on militants in Sinai – which shares borders with both Israel and the Gaza Strip – amid a rise in armed attacks on army and police personnel since the ouster of elected president Mohamed Morsi by the army in mid-2013.