A deliberate explosion in a Monaco residential building injures three people, two of them critically, after a suspect leaves a bag containing bolts and shrapnel and flees toward Beausoleil.Prosecutor General Stéphane Thibault says investigators have released a photo of the suspected perpetrator and that motive and target remain unknown, while Christophe Mirmand calls the blast unprecedented and vows a full inquiry.The victims include a couple in their 50s or 60s who are in critical condition and a 13-year-old with lighter wounds; local reporting and Le Figaro link the victims to Ukrainian businessman Vadim Ermolaev.Police reinforcements and security forces deploy from surrounding areas and coordinate with French counterparts as forensic teams process fragments, the bag and witness footage in an expanding investigation.