A home-made bomb carried by a woman killed at least three people and injured 21 ‌near an upscale restaurant in central Moscow on Saturday evening, authorities said, amid unconfirmed speculation on social media that the attack may have been linked to the war in Ukraine.

Russia’s National Anti-Terrorism Committee (NAK) said an unidentified woman carrying an improvised explosive device had tried to get into the restaurant but had been stopped by a security ⁠guard.

NAK said the woman, the guard and a customer at the Balzi Rossi Italian restaurant had been killed instantly in the blast that ‌followed.

REN TV cited a source on Sunday as saying that two people who had been taken to hospital later died of their wounds, bringing the death toll to five, although there was ‌no official confirmation.

REN TV said six people remained in a serious condition.

A woman walks past the fenced-off Balzi Rossi Italian restaurant on Sunday following a deadly bomb explosion in central Moscow. Photo: ReutersA woman walks past the fenced-off Balzi Rossi Italian restaurant on Sunday following a deadly bomb explosion in central Moscow. Photo: Reuters

“A home-made explosive device blew up at a restaurant in Kudrinskaya Square in Moscow, killing three people,” said the national anti-terrorism committee, quoted by state news agency TASS.

Dining and Cooking