Russian security service detains a minor after US embassy warns of Moscow attack

The FSB, Russia's domestic security service, has detained a minor after a warning from the US embassy in Moscow about a planned attack in the Russian capital. The FSB said it thanked the American side for the information provided.

According to the FSB, the teenager posted an online photo of himself in a balaclava and combat clothing, holding an object resembling an automatic weapon, in Tsaritsyno park on the southern edge of Moscow. The image carried the caption "I have found a place". Clothing and objects matching the photo were found at the time of the arrest. The FSB also said the minor subscribed to a neo-Nazi Telegram channel and searched for information on terrorist acts, mass murders and other violent acts.

The US embassy had warned of a credible threat of a mass-casualty attack at the Tsaritsyno museum and park, and said the American government was coordinating with Russian authorities. Tsaritsyno, designed by Catherine the Great as an estate on the edge of the city, was only partly completed. The park and the building were restored twenty years ago.