The full story of Moscow Restaurant Bombing

Moscow Mayor Sergey Sobyanin called the August 1 restaurant blast a 'cruel terrorist act' and promised those responsible would be punished.

The explosion occurred at about 7:55 pm near Kudrinskaya Square when a woman attempted to bring an improvised explosive device into the restaurant; it detonated, killing the woman, a security guard, and a visitor.

Twenty-one people were injured; Sobyanin said they were receiving medical treatment at Moscow hospitals.

Russia's National Anti-Terrorism Committee (NAC) said the device was an improvised explosive device but did not provide details on who assembled it or the intended target.

Sergey Goncharov, a veteran of Russia's Alpha counter-terrorism unit, speculated the woman may have been an unwitting courier, but this was not an official finding.

An explosion near a cafe in central Moscow killed three people and injured 15, according to Russian state news agency TASS.

The blast occurred on Saturday, and officials were cited by TASS.

Details about the cause of the explosion were not provided in the report.

An explosion near a restaurant terrace at Kudrinskaya Square in Moscow killed 3 and injured 15 on Saturday evening.

The blast occurred at around 2000 local time on the ground floor of one of Moscow's seven Stalin-era skyscrapers.

The injured sustained wounds of varying seriousness; investigators and emergency services worked at the scene.

Russian state TV suggested a gas canister may have caused the explosion, but Reuters could not confirm.

Baza online outlet reported the explosion occurred at the Balzi Rossi Italian restaurant, which had been closed for a private event.

A bomb detonated at a restaurant on Kudrinskaya Square in central Moscow on Saturday, killing at least 3 people and wounding 21 others.

Russia's National Anti-Terrorism Committee reported that an unidentified woman who attempted to carry the explosive device into the restaurant died in the blast, along with a security guard and a patron.

Russian news outlet Ria Novosti reported that the woman attempted to smuggle the bomb into the establishment.

Moscow Mayor Sergei Sobyanin called the explosion at a restaurant in central Moscow a 'terrorist act'.

The blast occurred on Saturday at a restaurant on Kudrinskaya Square, near the entrance of the Balzi Rossi restaurant.

Three people were killed, including the suspected bomber, and 21 others were injured.

An unidentified woman allegedly attempted to carry an explosive device into the restaurant; a security guard stopped her, and the device detonated.

The woman, the security guard, and a restaurant patron were killed in the blast.