PENNSYLVANIA – A Pennsylvania teenager indicted for supporting Islamic State
was hit with fresh terrorism charges on Wednesday, as U.S. prosecutors accused
him of posting online the names of approximately 100 U.S. military members and
exhorting his followers to kill them.

Jalil Aziz, 19, used his Twitter account to release the names,
addresses, photographs and military branches of the U.S. service members,
according to a superseding indictment filed in federal court in Harrisburg,
Pennsylvania.

Aziz told his followers to “kill them in their own lands,
behead them in their own homes, stab them to death as they walk their street
thinking that they are safe,” according to

The information had previously been posted online by supporters
of Islamic State, according to Aziz’s defense lawyer, Thomas Thornton, who
emphasized that the new charges are based on the same alleged acts that led to
the initial indictment.

“All of these charges come from Mr. Aziz allegedly using
his telephone in his room in his house,” Thornton said, calling it
“teenage stupidity.”

Aziz was arrested in December on charges that he tried to help
others travel to the Middle East to join fighters for Islamic State. The
militant group controls territory in Syria and Iraq and has claimed
responsibility for numerous mass killings, including the coordinated attacks in
Paris in November that killed 130 people.

He used at least 57 separate Twitter accounts to advocate
violence against U.S. citizens and to disseminate Islamic State propaganda,
prosecutors said. Aziz served as an intermediary between a person living in
Turkey and several members of Islamic State, according to court documents.

Prosecutors
also said investigators found a “go bag” containing ammunition for an
assault rifle, a black mask and a knife at Aziz’s house.