The US has warned of fresh attacks in Nigeria after a wave of deadly bombings claimed by Islamists Boko Haram killed 150 people in the country.

The Arab League has called an emergency meeting on Syria after forces there allegedly killed at least 10 demonstrators on one of Islams holiest days.

Muslims have marked Eid al-Adha, which ends the hajj pilgrimage to Mecca, overshadowed by the Arab Spring and attacks in Africa and Central Asia.

Eid-ul-Adha, the festival of sacrifice, has activists, Islamaphobes and Muslim vegetarians in a spin.