SPRINGFIELD, Mo. — A 40-year-old southern Missouri woman who sent threatening messages to several people in support of the Islamic State will spend years in federal prison.

Federal prosecutors say Safya Roe Yassin, of Buffalo, was sentenced Thursday to nine years in federal prison without parole.

Federal prosecutor say Yassin used several Twitter accounts to transmit information she believed was from the Islamic State, including soliciting violence against two FBI employees and two former members of the military and their families. Prosecutors say those four victims were targeted only because of their service to the U.S.

Using the name "Muslimah," Yassin tweeted messages supporting ISIS or reposted messages she knew were from ISIS operatives.

Some of the tweets including identifying information of the victims with the phrase "Wanted to Kill."