Story highlights Two U.S. residents where charged Thursday with attempting to support Islamic terror groups

Federal prosecutors indicted Jalil Ibn Ameer Azi, a 19-year-old teenager in Harrisburg, Pennsylvania, for "attempting to provide material support" to ISIS, according to the complaint unsealed Thursday.

Washington (CNN) Men in California and Pennsylvania were charged Thursday with attempting to support Islamic terror groups, federal authorities said.

Federal prosecutors indicted Jalil Ibn Ameer Azi, 19, in Harrisburg, Pennsylvania, for "attempting to provide material support" to ISIS, according to a complaint unsealed Thursday. Prosecutors said Aziz was sharing ISIS rhetoric on social media through at least 57 Twitter accounts, through which he encouraged violence against the U.S.

He allegedly posted a hyperlink with the names, addresses and identifying information of 100 reported military members, calling for violence against them. Aziz also was allegedly helping people eager to go overseas to support ISIS.

Authorities found a "tactical-style backpack" that held a knife, ammunition and high-capacity weapons magazines in Aziz's home. It was unclear if Aziz, who was scheduled to make a court appearance Thursday afternoon, had an attorney.

In California, a man near San Francisco was charged after he allegedly tried to travel to help the Al Nusra Front terror group. Adam Shafi, a 22-year-old from Fremont, attempted to travel to Istanbul, Turkey, before authorities stopped him at an airport, prosecutors said.

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