A Pennsylvania teenager was arrested and charged Thursday with conspiracy and providing material support to the notorious terror group Islamic State via social media.

Jalil Ibn Ameer Aziz, a 19-year-old U.S. citizen from Harrisburg, appeared in federal court Thursday to face charges for using 57 Twitter accounts to advocate violence against the U.S. in support of the Islamic State, or ISIS, reports USA Today. His arrest was made just weeks after FBI agents found high-capacity magazines in what was described as a "tactical-style backpack" in his bedroom during a search of his home on Nov. 27.

Authorities said Aziz's "go bag" contained "five M4-style high-capacity magazines loaded with 5.56 ammunition, a modified kitchen knife with the handle removed and wrapped in cloth or string, a thumb drive, a tin filled with various over-the-counter medications, and a head wrap commonly referred to as a balaclava," reports The Huffington Post.

According to officials, he tweeted his pledge of allegiance to an ISIS leader back in June 2014 and reposted tweets calling for violence following the murder of three Muslims students in Chapel Hill, North Carolina, in February.

"This martyrdom will be a spark that will awaken sleeping lions in America, let their blood watered the seeds of jihad #ChapelHillShooting," Aziz allegedly tweeted.

Aziz is also accused of composing a tweet about Pennsylvania's lax gun laws back in March.

"Pennsylvania have very light gun laws its very easy to arm yourself," Aziz allegedly tweeted.

Plus, Aziz discussed the thought of traveling to ISIS-controlled territory in Iraq or Syria and even purchasing a female slave.

Federal authorities also say Aziz used his Twitter accounts to assist individuals who were traveling to fight with ISIS, and that Aziz "allegedly acted as an intermediary between a person in Turkey and several well-known members" of the organization.

At another point, Aziz allegedly provided the ISIS members with maps and a telephone number.