Core Points - An explosion occurred at the Central Children's Store in Moscow, resulting in one fatality and multiple injuries [1] - The explosion is believed to have been caused by a gas leak from a canister, with no fire reported [1] - The Moscow Investigative Committee has launched a criminal investigation into the incident [1] Incident Details - The explosion took place in a prominent shopping center located near Lubyanka Square, which has been operational since 1957 [1] - The building has six floors and was the largest children's store in the Soviet Union at the time of its opening [1] - Emergency services quickly evacuated the building before firefighters arrived on the scene [1] Response and Investigation - Moscow's mayor expressed condolences to the victim's family and confirmed that medical assistance is being provided to the injured [1] - Investigative and forensic experts have begun examining the site of the explosion [1]