The world's largest body of Muslim-majority nations condemned the mass shooting but also warned against "political campaigning and self-serving agendas" in the wake of the tragedy.
Omar Mateen pledged loyalty to the Islamic State, but also expressed solidarity with the Tsarnaev brothers and support for al-Qaida and Hezbollah.
The suspect in the Orlando attack was identified as Omar Mateen of Port St. Lucie, Florida.