East Libyan forces said they participated on Friday in air strikes launched by Egypt on the Libyan city of Derna, following a deadly attack on Christians in central Egypt earlier in the day. The East Libyan air force's media office said in a statement that the strikes had targeted forces linked to al-Qaeda at a number of sites, and would be followed by a ground operation. A resident in Derna told Reuters they had heard four powerful explosions, and that the strikes had targeted camps around Derna used by fighters belonging to the Majlis al-Shura militant group.