An explosion ripped through a four‑storey block in Athens' Plaka quarter on Saturday, toppling a building just metres from the Acropolis and killing at least two people.

BBC reports that the blast caused the roof to collapse, trapping residents, holiday‑rental guests and passers‑by inside the rubble. Emergency services said dozens of first responders arrived within minutes, and the site remains cordoned off as crews continue to search for survivors.

Police have not disclosed a definitive cause, but officials said a preliminary investigation is under way to determine whether a gas leak, accidental detonation or deliberate act triggered the explosion.

"This is an incredible disaster," the mayor said, calling the incident "unprecedented" for the city.

Among those missing are two American tourists and a British national, according to local media that identified the property as a holiday rental popular with visitors to the historic centre. Hospital officials confirmed that several injured were taken to nearby clinics with injuries ranging from fractures to smoke‑inhalation.

Rescue Operations Intensify

Firefighters, police divers and specialised urban‑search teams have been working through the night, using thermal cameras and sniffer dogs to locate anyone still trapped beneath the debris. The Greek Red Cross set up a temporary triage centre on the square opposite the site, and volunteers are distributing water and blankets to on‑lookers.

collapsed building near Acropolis with emergency lights

Mayor Kostas Bakoyannis, who arrived at the scene shortly after the blast, praised the speed of the response but warned that the operation could take several days. "Our priority is to bring every person out alive," he told reporters, adding that additional resources from neighbouring municipalities have been dispatched.

Investigation Launched

Authorities have sealed off the surrounding streets while forensic units collect evidence. The Ministry of Citizen Protection confirmed that a joint task force, including bomb‑disposal experts, will examine the remains of the building and any remaining gas pipelines. DW News noted that the incident follows a series of recent safety concerns in Greece's ageing infrastructure, though officials cautioned against drawing premature conclusions about the blast's origin.

Impact on Tourism and Security

Plaka, a UNESCO‑listed neighbourhood that draws millions of visitors each year, is now facing a sudden drop in foot traffic as hotels and travel agencies advise travellers to avoid the area until the site is cleared. The Greek tourism board warned that the incident could affect the country's summer season, which accounts for a substantial share of national revenue.

International embassies in Athens have issued advisories urging their citizens to stay alert and follow local authorities' instructions. The incident also reignites debate over the safety of converting historic buildings into short‑term rentals, a practice that has grown rapidly in recent years.

Police have said they will release further details once the investigation yields concrete findings, and the mayor has scheduled a press briefing for later tomorrow to update the public on rescue progress.