Ahmad Ibrahim Al-Ahmad, a Syrian man who was believed to supply IED components to be used against U.S. soldiers and held responsible for the murder of four U.S. soldiers, has been extradited to the U.S. by Turkey.The extradition came ahead of the scheduled visit of U.S. Secretary of Defense Chuck Hagel to Turkey to form a coalition against the sef-proclaimed Islamic State of Iraq and al-Sham (ISIS) threat in Iraq and its surrounding region. Sought with an Interpol Red Notice, al-Ahmad was arrested in Turkey on May 17, 2011 and extradited from Turkey on Aug. 27, 2014 appearing in court a day after his extradition. Al-Ahmad, who is accused of supplying IED components that were used against U.S. soldiers in Iraq from 2005 until July 2010, is reportedly associated with the 1920 Revolution Brigades. A statement issued by the U.S. Department of Justice read that al-Ahmad supplied IED components to the insurgent group, 1920 Revolution Brigades. According to a Reuters agency story published on Jan. 18, the 1920 Revolution Brigades were among the extremist groups that captured Fallujah. Fallujah is also known as the first city captured by ISIS. 1920 Revolution Brigades and ISIS are still cooperating actively, according to the report issued in July by ISIS expert Aymenn Jawad al-Tamimi. Al-Ahmad's trial is scheduled for Oct. 7.With al-Ahmad's extradition, the number of those who have been extradited to the U.S. from Turkey for the last five years has risen to four, including defendants accused of homicide, fraud, tax evasion and terrorism.