Coptic Christian men whose relatives were abducted by ISIS militants gather in the village of el-Aour, near Minya, Egypt, on Feb. 13, 2015
Hassan Ammar—AP
February 16, 2015 2:54 AM EST

Egyptian warplanes launched fresh sorties against militants allied with the Islamic State of Iraq and Greater Syria (ISIS) on Monday after the jihadists released a gruesome video showing the apparent execution of more than a dozen Egyptian hostages over the weekend.

Egypt’s air force reportedly targeted ISIS training sites and weapons storage areas in Libya at dawn, reports Reuters.

“The air strikes hit their targets precisely, and the falcons of our air forces returned safely to their bases,” read a statement released by the nation’s military on Monday.

Hours before the strikes began, Egyptian President Abdul Fattah al-Sisi promised during a televised address to retaliate against the militants responsible for the murder of 21 Egyptian Coptic Christians who had been working in Libya as laborers.

“Egypt reserves the right to respond at the proper time and in the appropriate style in retaliation against those inhuman criminal killers,” al-Sisi said, according to the BBC.

Fighters associated with ISIS have flocked to the group’s strongholds in eastern Syria and swaths of northern Iraq. However, years of instability in war-torn Libya have also allowed the group to expand its influence into pockets of North Africa.

More Must-Read Stories From TIME

Contact us at letters@time.com.

Read More From TIME
You May Also Like
EDIT POST