Gas leak suspected as Athens rental building collapse kills six in Plaka

Six people were killed on Friday when a three-storey building in Athens's historic Plaka district was reduced to rubble by an explosion that investigators believe was caused by a gas leak. Among the dead were four American holidaymakers, a British man and a Greek national who reportedly lived in the building that housed the holiday rental property at the time.

The blast occurred on a narrow road sandwiched between two of the capital's most visited monuments — the Acropolis and the Temple of Olympian Zeus — in an area that forms the heart of Athens's pedestrianised tourist quarter. Photographs from the scene on Saturday showed a total collapse, with the structure's remains flanked by heavily damaged neighbouring properties and household furniture, rugs and personal belongings scattered across the roadway.

The scale of the destruction appears to have been severe. The building, which contained short-term accommodation, was completely crushed by the force of the detonation, while debris damaged properties on either side of it. Local media reported that people were injured by material thrown across nearby streets and that several surrounding buildings had to be evacuated as a precaution while crews assessed their stability.

Emergency services spent the night and the following morning working through the wreckage in an effort to locate any survivors. Excavators and thermal imaging cameras were deployed at the site, allowing searchers to pick out heat signatures in the pile of debris. The operation continued through Saturday, with images showing firefighters and other rescue workers picking carefully through twisted metal, broken masonry and domestic possessions.

By Saturday afternoon, officials confirmed that all six bodies had been recovered from the site. The search for survivors therefore ended in the confirmation of six deaths, with no additional casualties reported in the immediate aftermath of the search.

The victims were not identified as missing until well after the explosion. The American tourists were discovered to be unaccounted for when they failed to appear for a flight departing Athens airport later on Friday, news agency Reuters reported, citing local police. The identification of the holidaymakers through the missing persons' check, rather than by neighbours or building occupants, has underlined concerns about how short-term lets are monitored in some of the city's oldest quarters.

Athens Mayor Haris Doukas led the response from the scene, describing what had happened as "an incredible disaster". His remarks came as search and recovery work continued in the neighbourhood, where emergency vehicles blocked off streets in the shadow of the Acropolis hill.

Investigators attending the collapsed building are working on the preliminary view that a gas leak was responsible. Such incidents are a recurring hazard in dense, older urban districts, where ageing gas infrastructure, densely packed properties and buildings joined by party walls can combine to turn a small leak into a building-destroying event. Officials have not yet published a definitive account of how the ignition occurred, and the official investigation is expected to examine whether the property's gas installation, the age of the service and the state of repair of the structure played a role in the collapse.

The circumstances of the case have also drawn attention to the proliferation of short-term rental properties inside Athens's heritage neighbourhoods. Plaka, with its narrow lanes, low-rise houses and converted buildings close to the major archaeological sites, is among the most sought-after districts for visitors. Incidents of this kind typically prompt renewed calls for inspections of gas networks, structural assessments of ageing housing stock and closer regulation of the holiday lets that now occupy so much of the city's central residential fabric.

The human cost of the blast extended beyond those who died. Those living and working in surrounding properties were forced out of homes and businesses in one of the capital's busiest visitor areas, and pedestrians in nearby streets were exposed to flying debris. Emergency services also had to secure a zone immediately adjacent to major tourist sites, where crowds and traffic are normally heavy.

Britain's Foreign Office confirmed it was aware of what it called a "suspected explosion" in Athens and that it was in touch with the Greek authorities. Such contact typically precedes consular support for the families of British nationals who have died abroad, including repatriation arrangements and liaison with local emergency and coronial services.

Questions remain outstanding as the investigation proceeds, including the precise cause of the blast, the number of people treated for injuries, and whether authorities will examine the circumstances in which the rental property was being occupied. With all victims recovered and the site secured, the focus now shifts to establishing how a single leak could have brought down an entire building in the shadow of the Acropolis, and what the incident will mean for the safety of tens of thousands of similar homes and visitor accommodation in Athens's historic centre.