Federal authorities arrested a 21-year-old Pennsylvania man accused of preparing a violent attack on behalf of ISIS after tracking him to a hotel, the Justice Department announced Tuesday.

Agents seized a semiautomatic rifle, five magazines and 190 rounds of ammunition, as reported by The New York Post.

Jonathan Hunter Kramer, of Valencia, allegedly pledged allegiance to ISIS and offered to distribute explosives manuals online.

BREAKING: The FBI has arrested 20-year-old Jonathan Kramer of Valencia, Pennsylvania, in connection with an alleged ISIS-supported attack plot.

This latest arrest raises even more questions about Pennsylvania. Back in March, two Pennsylvania men, Emir Balat and Ibrahim… https://t.co/zzUJ8KSlP4 pic.twitter.com/bsKhw3G2HF — Viral News NYC (@ViralNewsNYC) September 15, 2026

According to a federal criminal complaint, Kramer also wrote that he was preparing for his “mission” but still needed a “weapon.”

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Kramer is charged with receiving a firearm and ammunition while knowing, or having reasonable cause to believe, that they would be used to commit a felony or a federal terrorism crime.

That includes providing or attempting to provide material support to a designated foreign terrorist organization.

The FBI had been aware of Kramer since a 2023 investigation, when he was still a minor.

The Justice Department said he was charged and adjudicated delinquent in Pennsylvania for his role in a plot to carry out a mass casualty attack and for possessing child sexual abuse material.

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Authorities opened another investigation after receiving an anonymous tip on March 19, shortly after Kramer was released from a juvenile detention facility.

The tipster reported that Kramer was ordering “mysterious” packages and “talking to his friends from before” his juvenile adjudication.

Investigators said Kramer used the online name “Hamza Al Rashid” and claimed an affiliation with ISIS.

He allegedly offered to share explosives manuals and posted messages about preparing for his “mission,” while saying that he was missing a “weapon.”

On Friday, FBI agents watched Kramer leave his home carrying a bag and take a rideshare to a store.

According to the complaint, he purchased a disposable phone while agents continued monitoring his movements.

Kramer then met another person in the store parking lot and retrieved a long black bag from the trunk of a vehicle.

He traveled to a hotel in Cranberry Township and paid cash for a room, according to authorities.

Witnesses at both the store and the hotel told investigators that the long bag produced a metallic clicking sound when Kramer put it down.

After checking into the hotel, he traveled to a sporting goods store, where agents observed him at the gun counter.

Agents approached Kramer after he returned to the hotel carrying two bags from the sporting goods store.

Searches of Kramer, his hotel room, and his home uncovered the rifle, the ammunition, and the magazines, according to the complaint.

Authorities said two of the five rifle magazines were loaded.

The remaining three magazines were each capable of holding 30 rounds, adding to the alarming cache federal investigators said they discovered during the searches.

Agents also recovered a rifle scope and bipod, an entrenchment tool, pepper spray, and approximately 30 knives.

The complaint further described a handwritten note that read, “DoNt look For me[.] IDK what I did buT I cant live In constant Fear.”

Attorney General Todd Blanche said the arrest occurred as Americans marked the 25th anniversary of the Sept. 11 terrorist attacks.

He credited the federal agents whose investigation stopped the alleged plan before it could advance further.

“Their outstanding work thwarted this alleged attack before innocent lives could be lost,” Blanche said.

His statement emphasized the stakes of the investigation while federal prosecutors proceeded with their case against Kramer.

FBI Director Kash Patel said Kramer had been “plotting a violent attack in support of ISIS.”

Patel cited Kramer’s online activity and his acquisition of weapons in describing the allegations facing the Pennsylvania man.

The Justice Department did not identify any specific target connected to the alleged attack. Kramer was booked into the Butler County Jail and made his first court appearance Monday.

Federal prosecutors have asked that Kramer remain in custody without bond. They argued that he poses a danger to the community as the case moves through the federal court system.

Pennsylvania man Jonathan Hunter Kramer is facing terrorism charges after allegedly preparing weapons and ammunition for an ISIS-inspired attack.

Previously convicted as a juvenile in a 2023 mass-casualty plot, Kramer was released this year and allegedly resumed plotting. Agents… pic.twitter.com/T3rhmqOGFK — Breaking911 (@Breaking911) September 15, 2026

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