A not-for-profit group the Secure Community Network, which is known to be reliable when concerned with threats to parts of the U.S. Jewish community, expanded on the government report.
"Muhammad may have considered and conducted research on other targets in addition to the military recruiting center in Little Rock, including military sites, government facilities, as well as Jewish institutions in several cities throughout the United States," SCN, a Jewish Federations of North America initiative, reported. "Law enforcement officials have reported that Muhammad may have researched Jewish entities in Little Rock."
Muhammad, upon his arrest Monday shortly after the fatal shooting, allegedly confessed and told authorities he acted alone, according to court documents.
Officials say that the FBI and the CIA are engaged in an intense effort to reconstruct Muhammad's path to extremism, taking apart his life, examining his friendships, educational records, travel within the United States and possible contacts with extremists overseas.
Though police told ABC News that a preliminary investigation indicated that Muhammad acted alone, federal authorities also are trying to determine whether others were involved in any way -- including supplying weapons, lending encouragement or support, and helping to identify a target. Although he allegedly confessed, Muhammad also has pleaded not guilty to the shooting.