Moscow experienced a tragic explosion in a high-end residential area on Monday morning, resulting in one fatality and four injuries, according to reports from various Russian news outlets that referred to emergency response personnel.

Health authorities in Moscow indicated that those injured in the explosion are in serious condition and have been admitted to local hospitals, as reported by the state news agency RIA Novosti.

In response to the blast, local officials have initiated a criminal investigation, although specific charges have not yet been disclosed. Footage shared by the Investigative Committee of Russia depicted significant damage in the building’s foyer, with shattered glass doors and damaged ceilings.