All we know about fatal Moscow restaurant blast – and if Ukraine could be behind it

A further 21 people have been injured following at an explosion in a Moscow restaurant

An explosion at the Balzi Rossi restaurant in central Moscow on Saturday evening killed three people and injured 21 others. The Russian National Antiterrorism Committee stated that a woman attempted to carry an improvised explosive device into the venue but was stopped by a security guard; both died in the blast alongs

At least 21 others injured after a bomb exploded at a restaurant in central Moscow on Saturday

At least three people, including a woman carrying a homemade bomb, were killed and 21 others injured after an explosive device detonated outside an Italian restaurant in central Moscow on Saturday.According to Russia's National Anti-Terrorism Committee, the unidentified woman attempted to enter the Balzi Rossi restaura

The explosion occurred near an upscale Italian restaurant located in one of Moscow's seven Stalin-era skyscrapers at Kudrinkskaya Square

Russia launched deadly strikes on Ukraine, killing at least eight people, including three children, officials say. Across the border in Poland, authorities are investigating an apparent Russian missile crossing into Polish airspace. CBS News' Aidan Stretch has more.