A new report says the number of U.S. Muslims accused in terror plots dropped by more than half in 2010.
The study was released Wednesday by the Triangle Center on Terrorism and Homeland Security, which includes experts from Duke University and the University of North Carolina-Chapel Hill.
Twenty American Muslims were suspects in terror plots last year, compared to 47 in 2009.
The 2009 spike was due mainly to a large number of Somali-Americans who tried to join the al-Shabab militant movement in Somalia.
Last year, five American Muslim terror suspects carried out their plans, including one who tried to set off a bomb in Times Square and others who joined militant movements overseas.