( CNN ) ISIS operatives have executed two groups of prisoners , believed to be Ethiopian Christians , in Libya , according to a video released Sunday by the terror network 's media arm . The Ethiopian government confirmed Monday that 30 of its citizens were among the two groups , according to the Ethiopian News Agency . The al-Furqan Media video -- which is highly produced and titled `` Until There Came to Them Clear Evidence '' -- shows two groups of men , one in orange jumpsuits and the other in black , being killed at different locations in Libya , according to the video 's narrator . One group is beheaded on a beach along the Mediterranean Sea , while the other group is shot in Southern Libya , hundreds of miles away . `` All praise be to Allah , the Lord and cherisher of the world and may peace and blessings be upon the Prophet Mohammed . To the nation of the cross , we are back again on the sands , where the companions of the Prophet , peace be upon him , have stepped on before , telling you : Muslim blood that was shed under the hands of your religion is not cheap , '' the narrator says in Arabic on the 39-minute video . The narrator continues , `` In fact , their blood is the purest blood because there is a nation behind them ( which ) inherits revenge . And we swear to Allah : the one who disgraced you by our hands , you will not have safety , even in your dreams , until you embrace Islam . '' Quoting Mohammed , the narrator says that those who `` perform prayer and pay alms '' will have `` their blood and property '' protected by the Prophet unless Islam dictates otherwise . `` You pay ( tax ) with willing submission , feeling yourselves subdued . Our battle is a battle between faith and blasphemy , between truth and falsehood , until there is no more polytheism -- and obedience becomes Allah 's on its entirety , '' the narrator says . Earlier in the video , a different speaker says Christians in the northern Iraqi city of Mosul were given the choice to embrace Islam or maintain their Christian faith and pay a tax . `` The Islamic state has offered the Christian community this many times and set a deadline for this , but the Christians never cooperated , '' the speaker says . At the beginning of the video , a man who appears to be a judge in a court enforcing Islam 's Sharia law holds up documents and says a Syrian Christian had owed a Syrian Muslim 550,000 Syrian pounds ( about $ 2,900 ) since 2004 , but the Muslim was unable to obtain the money under President Bashar al-Assad 's regime . `` After applying to the Islamic court he got his money back within one month , '' the man says . The law cited throughout the video comes from the Quran 's Surah 9:29 , whose exact translation is an area of dispute among religious scholars . The gist is that Muslims are commanded to fight those who do n't believe in Allah or the Last Day ( Islam 's equivalent of Judgment Day ) unless the nonbelievers pay a tax or tribute . In February , ISIS released a video of 21 Coptic Christians from Egypt being executed on a Libyan beach . Those captives , too , wore orange jumpsuits . In that video , released by al-Hayat Media Center , another ISIS media arm , a masked man references the killing of Osama bin Laden and his burial at sea . `` The sea you have hidden Sheikh Osama bin Laden 's body in , we swear to Allah , we will mix it with your blood , '' he threatens in English . CNN 's Anas Hamdan , Christine Theodorou and Brian Walker contributed to this report .
Footage shows groups of captives in jumpsuits executed at 2 locations , narrator says . Comment: