A court has in absentia convicted seven Egyptian Coptic Christians and a Florida-based American pastor on charges linked to "Innocence of Muslims".
Ayman al-Zawahiri said a film made in the US mocking the Prophet Muhammad showed Washington was waging a "crusader Zionist war" against Muslims.
A California man behind an anti-Islam film is due in court for a hearing on whether he violated his probation on a bank fraud conviction.
The Orientalist scholar W Montgomery Watt wrote of Muhammad, the prophet of Islam: "Of all the world's great men, none has been so much maligned."
Spanish political satire magazine El Jueves has published a cartoon of the Prophet Muhammad on its cover, soon after protests rocked the Muslim world.
Libyan leader Mohamed al-Megaryef said that the deadly September 11 attack on the US consulate was a pre-planned assault.
Muslim leaders have demanded action to stop religious insults in a challenge to Barack Obama's defence of freedom of expression at a UN meeting.
US Secretary of State Hillary Rodham Clinton has appealed to Muslims to show "dignity" and not resort to violence as they protest an anti-Islam film.
The process of repatriating the remains of eight South Africans killed in a suicide attack in Kabul last week is expected to take another three weeks.
"Death to America, death to Israel, death to the enemies of Islam" shouted crowds of Muslim protesters stretching several kilometres in Kano, Nigeria.
Protests against insults to Prophet Muhammad turned violent in Pakistan, killing at least 15, but remained mostly peaceful in other Arab countries.
The extreme reaction of Muslims to anti-Islam film "Innocence of Muslims" comes after years of subjugation and humiliation by Western forces.
France has ramped up security at its embassies after a weekly revived a formula seizing attention: Publishing crude cartoons of the Prophet Muhammad.
Secretary of State Hillary Clinton has denied that Washington was warned of an imminent attack in Libya.
A suicide bombing that left eight South Africans dead in Afghanistan has highlighted the risks of working in the war-torn state.
They say the West has been hoodwinked by Muslims and claim to have been vindicated by last week's attacks, but who are America's "counter jihadis"?
Eight South Africans are among those killed in a revenge bombing in Kabul over an anti-Islam film as protests rage across the Middle East.
A new video shows Libyans trying to save Chris Stevens, cheering "God is great" and rushing him to hospital after finding him inside the US Consulate.
Libya has arrested 50 suspects over the killing of the US envoy and three other Americans, claiming the Benghazi attack was pre-planned.