Washington DC - A US Army veteran who allegedly went to Lebanon and Syria to try to join Hezbollah has been indicted for attempting to support a "terrorist" organization, the Justice Department said Thursday.

24-year-old Jack Danaher Molloy, a dual US-Irish national, was arrested in Chicago last month and brought to Pennsylvania on Monday to face charges, the department said in a statement.

According to the indictment, Molloy traveled to Lebanon in August and attempted to join Hezbollah, which Washington has designated as a "terrorist" group.

When his efforts were rebuffed, he went to Syria in an attempt to join the organization there.

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Molloy returned to the US and allegedly continued his attempts to join Hezbollah, communicating online with individuals in Lebanon.

According to the Justice Department, Molloy promoted violence against Jewish people on social media and said in a WhatsApp exchange with a family member that his "master plan was to join Hezbollah and kill Jews."

Per the DOJ statement, Molloy's animosity towards Jews was also evidenced "by multiple images and videos on his electronic devices and the usernames he chose for his social media and email accounts."

For example, his X username was reportedly "K*KEKILLER313."

Molloy faces up to 20 years in prison if convicted of providing material support to a "terrorist" organization.