The U.N. Security Council will meet in an emergency session Wednesday on the crisis in Libya.

The meeting comes as Egypt presses the council to take action after the Islamic State group posted a video of the beheading of 21 Egyptian Coptic Christians.

Egyptian President Abdel-Fattah el-Sissi said in a radio interview aired on Tuesday that creating a U.N.-backed coalition was the best course of action to rid Libya of Islamic extremists.

The Egyptian foreign minister and the U.N. envoy to Libya are expected to brief the council Wednesday.