Western leaders and officials joined condemnation of Tuesday's assault as did Lebanon's Shi'ite militant group Hezbollah
Afghan President Hamid Karzai sharply condemned the film in a statement, calling its making a "devilish act", saying he was certain those involved in its production represented a very small minority.Afghanistan shut down the YouTube site so Afghans would not be able to see the film.
Security experts say the area around Benghazi is host to a number of Islamist militant groups who oppose any Western presence in Muslim countries.
Egypt's Coptic Orthodox Church condemned in a statement some Copts living abroad who it said financed "the production of a film insulting the Prophet Mohammad", an Egyptian state website said. About a 10th of Egypt's 83 million people are Christian.