France on Sunday called on Saudi Arabia and Qatar to help find a solution to the crisis in Egypt as it received senior diplomats from the two rival regional powers.

As ambassadors from the 28 members of the European Union gather in Brussels to “urgently review” a €5 billion aid package to Egypt, the interim government in Cairo has criticised the move.

Militants fired rocket-propelled grenades at two buses in the Sinai on Monday killing 24 policemen, as Egypt’s military chief vowed a “forceful” response to violence roiling the Arab world’s most populous nation.