Seventy people have been injured during ongoing clashes between security forces and protesters near the US embassy in Cairo, the Egyptian Ministry of Health said Thursday.  

Police fired tear gas at hundreds protesters demonstrating outside the embassy, for the third day in a row, against the US-produced anti-Islam film "Innocence of Muslims".

Some of the demonstrators, who were described as "young and not bearded" by local media, hurled fire bombs and rocks at security forces. 

Reporters at the scene said a car was also set on fire by protesters. 

Sporadic clashes took place throughout the night outside the US embassy where thousands of demonstrators, mostly ultra-conservatives, climbed the walls of the US Embassy on Tuesday and pulled down the US flag to replace it with the black Islamic flag with the words "There is no god but Allah and Mohammad is his messenger".

On Wednesday, Egyptian President Mohammed Morsi denounced the movie as offensive to Prophet Mohammed and immoral and called on the Egyptian embassy in Washington to take necessary legal action against the filmmaker.

Similar protests also took place in Iran, Yemen, Tunisia, Morocco, and Libya where protesters angry about clips of the film posted online attacked U.S. diplomatic compounds on Tuesday killing U.S. Ambassador John Christopher Stevens and three other Americans.

The film in question depicts the Prophet Mohammad having sex and calling for massacres.