Reported by:
Cherry Meigh Timbol
News Content Editor
Published November 3, 2026
Moscow – Russia’s Federal Security Service (FSB) said on Sunday that a Russian minor had been detained over a threat to carry out a terrorist attack in a Moscow park following a tip-off from the United States, according to the Interfax news agency.
The warning
On Saturday, the FSB said it had received information from the U.S. through established partner channels about preparations for an attack in Moscow and was taking appropriate measures.
The U.S. Embassy in Moscow said it was aware of a credible threat of a mass casualty event at Moscow’s Tsaritsyno Museum Reserve and that Washington was coordinating with Russian authorities. Tsaritsyno, a palace museum and park complex in southern Moscow, was temporarily closed on Saturday after the tip. Russian state media reported that several scheduled events were canceled, though museum officials initially said they had received no direct warnings.
The detention
The FSB said it “verified” the information received from U.S. law enforcement, and as a result a Russian minor was detained. The suspect has not been publicly identified, and the FSB has not given his age.
According to the FSB, the teenager had posted photographs of himself on TikTok wearing tactical clothing and a balaclava and holding an object that looked like an automatic weapon. He had also posted photographs taken at the Tsaritsyno reserve with the caption “I found a place.”
Officials searching the minor’s home found the clothes and accessories seen in the social media posts. His phone showed a subscription to a neo-Nazi channel on Telegram and a significant number of searches concerning terrorist attacks, mass killings and other acts of violence, according to Interfax. The FSB said airsoft weapons were also found at the home.
Official response and next steps
“We are grateful to the American side for providing the information,” the FSB said.
The agency said Russia’s Investigative Committee is considering what legal or procedural action to take. No charges had been announced in the reports reviewed. The allegations come from the FSB and have not been independently verified.
Background
The U.S. has previously warned Russia of potential attacks. That includes a March 2024 warning issued weeks before an attack on a Moscow concert hall by an affiliate of the ISIL group that killed more than 140 people. Russian President Vladimir Putin publicly dismissed such warnings as provocations just days before the Crocus City Hall attack. Reports also note that in 2017 and 2019 the FSB acknowledged U.S. tips that helped prevent attacks in St. Petersburg.
