( CNN ) -- A Kosovar has admitted shooting dead two American servicemen and injuring two others in an attack on a U.S. Air Force bus in Germany , his lawyers said Wednesday . Arid Uka , 21 , appeared in court in Frankfurt where he faces murder charges over the March 2 shooting outside Frankfurt International Airport , in which Nicholas Alden and Zachary Ryan Cuddeback of the U.S. Air Force died . Uka `` deeply regrets the crime he has committed , '' according to a statement provided by his lawyers , Michaela Roth and Jens Joerg Hoffman , and made a full confession to the court . At the time of the incident he was `` under influence of extreme Islamistic propaganda , '' his lawyers said , but this was not the sole reason behind his actions . On the eve of the shooting , Uka had watched an Internet video that he thought showed American soldiers severely mistreating a young Muslim woman , they said . Believing the clip was real , he had reacted by shooting the servicemen in an attempt to prevent such abuse happening in Afghanistan , the lawyers said . The court heard the video clip was in fact a scene from the U.S. anti-war film Redacted , German media reports say . The Brian De Palma drama is based on the rape and murder of an Iraqi girl by American soldiers in Mahmoudiya in 2006 . `` He is now aware that he has been misguided by Islamistic propaganda , '' and that his deeds are not in accordance with his Islamic faith , Uka 's lawyers said in their statement . They added that Uka was keen to bring the case to an end as quickly as possible , for the sake of the survivors and families of the victims . He is believed to have acted alone , German officials have said previously . According to a complaint filed by the U.S Department of Justice in June , Uka shot Alden in the head before boarding the bus and shooting Cuddeback . He then continued to fire , injuring two other servicemen while shouting `` God is great , '' the complaint said . When his weapon jammed , Uka ran from the bus and was later arrested by German police , the complaint said . Uka , a Muslim from Mitrovica in northern Kosovo , moved to Germany with his parents as a child .
Arid Uka `` deeply regrets '' and fully confesses his crime , his lawyers say . He is accused of shooting dead two U.S. servicemen and injuring two others . The men were killed in a suicide bombing on the outskirts of Baghdad last month. The footage was in reality a scene from an anti-war film , the court heard .