Police guard an entrance of the Central Children's Store (Detsky Mir) after a blast that was reportedly caused by the explosion of a gas balloon, on the Lubyanka square near the headquarters of the Federal Security Service (FSB), the successor of KGB in Moscow, Russia, Sunday, Aug. 24, 2025.

MOSCOW (AP) -- At least one person was killed on Sunday in an explosion at a prominent retail building in central Moscow, emergency services said.

The blast happened on the third floor of the Central Children's Store shopping mall, on Lubyanka Square.