Russia’s Federal Security Service said it detained a Russian minor over an alleged threat to attack Moscow’s Tsaritsyno Museum Reserve after receiving information from the United States. The FSB said he had posted photographs online wearing tactical clothing and holding an object resembling an automatic weapon, alongside images of the park captioned “I found a place”. The complex was temporarily closed on Saturday following the warning. The FSB thanked U.S. authorities for the information and said Russia’s Investigative Committee was considering further legal action.