Russian security authorities have arrested a teenager suspected of planning a terrorist attack at a popular museum and park complex in Moscow, following intelligence shared by the United States.
Russia’s Federal Security Service (FSB) announced the arrest on Sunday, November 1, 2026, identifying the suspect as a Russian citizen who is still a minor.
According to the agency, the teenager allegedly posted photographs on TikTok showing himself dressed in tactical clothing, a balaclava and goggles while holding an object resembling an automatic weapon.
He also reportedly shared pictures taken at the Tsaritsyno Museum Reserve in southern Moscow with the caption, “I found a place.”
The FSB said a search of the suspect’s residence uncovered clothing and accessories similar to those seen in the social media photographs.
Investigators also reportedly discovered that the teenager was subscribed to a neo-Nazi channel on Telegram and had made numerous internet searches relating to previous terrorist attacks, mass shootings and other violent incidents.
The arrest followed a security warning issued by the US Embassy in Moscow on Saturday, October 31, alerting Americans to what it described as a credible threat of a mass-casualty event at the Tsaritsyno Museum Reserve.
The embassy advised people to avoid the area and said the US government was coordinating with relevant Russian authorities to address the threat.
Following the warning, planned public events at the museum were reportedly cancelled, while security measures were strengthened and access to the complex temporarily restricted.
In its statement announcing the arrest, the FSB expressed appreciation to the United States for sharing the intelligence that helped identify the suspected threat.
Russia’s Investigative Committee is currently considering the appropriate legal and procedural steps to take against the teenager.
The development comes amid renewed attention to intelligence cooperation between Washington and Moscow, despite their longstanding political tensions.
The United States had also warned Russia about a possible terrorist attack targeting large gatherings in Moscow in March 2024, weeks before the deadly Crocus City Hall attack that claimed more than 140 lives.
