( CNN ) In under three years Liban Haji Mohamed has gone from driving a cab in Washington , D.C. , to a spot on the FBI 's Most Wanted Terrorists list . The bureau on Thursday announced Mohamed 's addition to the list as well as a $ 50,000 reward for any information on the 29-year-old Somali-born U.S. citizen . The FBI says Mohamed is accused of providing material support to Al Shabaab , the Somali-based group that 's linked to al Qaeda . The group has launched many deadly terrorist attacks , including one on a popular mall in Kenya in 2013 . The Westgate Mall attack lasted four days and killed dozens . Mohamed left the United States in the summer of 2012 attempting to join Al Shabaab , the FBI said . Interpol has sought him ever since . `` Not only did he choose to go to Somalia and fight with Al Shabaab , he took a prominent role in trying to recruit people to fight for Al Shabaab , '' said Carl Ghatas , special agent in charge of the counterterrorism division at the FBI 's Washington field office . The release says Mohamed may go by multiple alias ; that he speaks Somali , English and Arabic ; that he stands 6 feet tall and weighs just under 200 pounds . Anyone with information can submit it anonymously at tips.fbi.gov .
He is a 29-year - old Kenyan - born U.S. citizen . He is accused of providing material support to Al Shabaab .