On Saturday, a bombing occurred at an upscale restaurant in Moscow, resulting in three deaths and injuring at least 21 people. Moscow’s Mayor Sergei Sobyanin called the event a “brutal terrorist act” and pledged to find those responsible.

The explosion took place at the Balzi Rossi Italian restaurant, located in the Russian capital. Mayor Sobyanin stated on social media that the victims are receiving necessary medical care in local hospitals.

“Yesterday, a brutal terrorist act was committed in Moscow that claimed human lives,” wrote Sobyanin on Sunday. “The victims are currently in the city’s hospitals, where they are receiving all necessary care.”

Russian authorities have launched an investigation but have not named any suspects. No group had claimed responsibility for the attack as of Sunday. The explosion was reportedly caused by a homemade explosive device, according to Russia’s National Anti-Terrorism Committee.

Russian state news agency RIA Novosti reported that a woman carrying the bomb was intercepted by a security guard at the restaurant, preventing her from entering before the device exploded. The blast killed the woman, the security guard, and a restaurant patron. The explosion occurred around 8 p.m. local time at the restaurant, located on Kudrinskaya Square.

On the night of the bombing, the restaurant was closed to the public for a private event, according to its website and Russian state media. Video footage released by Russian state media showed heavily armed police, ambulances, and other emergency vehicles at the scene.

Earlier this year, Russia’s Federal Security Service (FSB) announced plans to enhance security measures for military and government officials following multiple assassination attempts in Russian cities since the country’s invasion of Ukraine began in February 2022.

The authorities have not linked the restaurant bombing to earlier attacks or the ongoing war in Ukraine.