A homemade bomb carried by a woman exploded near an Italian restaurant in central Moscow on Saturday evening, killing three people and injuring at least 21, authorities said.
The blast occurred just before 8pm close to a restaurant located in one of Moscow's seven Stalin-era skyscrapers at Kudrinskaya Square, police said.
Authorities said the device was homemade and had been carried by a woman at the time of the explosion. They did not immediately say whether the woman was among the casualties or provide any details about her identity.
More than 20 injured people were reported at the scene, and an investigation was under way.