Officers critical after Melbourne blast THREE police officers are in critical conditions and two firefighters are injured following an explosion in Melbourne's south. Emergency services were called to a Hambleton Street flat in Middle Park at 9.15pm on Saturday following reports of a male threatening suicide. As firefighters and police entered the second-floor flat there was a large explosion. Three police officers were seriously injured and were taken to The Alfred hospital. Two female officers are in a critical condition, while a male officer is critical but stable. Two firefighters were also injured, along with the male occupant. Police have asked for anyone with information about the incident to come forward.