Four men from California have reportedly been charged for planning to kill Americans overseas and in the United States.
The US authorities said that the men had planned to join Al-Qaeda and the Taliban in Afghanistan.
According to the Daily Express, FBI spokeswoman Laura Eimiller said they were under arrest for plotting to bomb government facilities and public places.
The federal complaint, unsealed during initial appearances, showed that 34-year-old Sohiel Omar Kabir introduced two other California men to the radical Islamist doctrine of now-dead Al-Qaeda leader Anwar al-Awlaki.
The report quoted the authorities, as saying that said Kabir traveled to Afghanistan and communicated with the two, Ralph Deleon, 23, and Miguel Alejandro Santana Vidriales, 21, so he could arrange for their travel to join him and meet his contacts for terror organisations.
They later recruited 21-year-old Arifeen David Gojali, authorities added. (ANI)