A bomb blast in a luxury apartment block in Moscow has killed Armen Sarkisyan, a pro-Russian paramilitary leader, and injured several others. The explosion happened as he entered the building with bodyguards. Sarkisyan was on an international wanted list for alleged crimes linked to Ukraine's conflict. Investigators have opened a criminal probe into the incident, which is seen as a carefully planned assassination attempt. The blast adds to a series of violent incidents within Russia amid ongoing tensions related to the Ukraine war. Authorities are currently investigating the identity of those responsible.