Fighting broke out over Aden International Airport on 19 March , with special forces loyal to ex-president Ali Abdullah Saleh attempting to seize the airport before they were defeated by troops and militiamen under orders from the Hadi administration . The following day , in an apparently unrelated incident , four suicide bombers detonated themselves in Sana'a mosques packed with Houthi congregants , killing at least 142 . The Sunni Islamist group Islamic State of Iraq and the Levant 's Yemen branch claimed responsibility
detonated themselves in Sana'a mosques
2015 Sana'a mosque bombings
Yemeni Crisis (2011–present)