The natural gas installation dates back to 2011, and the investigation is focusing on a tankless water heater that has not yet been found

After the deadly Plaka explosion, here is what Greek law requires for gas leak detectors, which certifications matter, and what a full system costs

Investigators are examining a possible natural gas leak after an explosion in the two-story building in Athens’ historic Plaka district killed six people

Athens Mayor Haris Doukas says the two adjacent buildings may be declared unfit for use, as engineers inspect the area after the deadly blast

The victims were four American tourists, including a newlywed couple on their honeymoon, and an elderly couple who lived upstairs.

Four American tourists and an elderly couple, a British man and his wife, were killed in Friday’s blast, as investigators continue working to determine the cause of the explosion.

Four bodies have now been recovered from the ruins of the building on Lysikratous Street, as rescue crews continue searching the site and investigators work to establish the cause of the explosion.

Five people remain missing after Friday’s blast in central Athens, including three American tourists and an elderly British-Greek couple, as rescue crews continue searching the remains of the collapsed building

Search continues for five confirmed missing people as authorities examine whether a sixth person may have been inside the building and investigate a natural gas connection on the second floor

Police are trying to locate five people as a driver recalls his car being lifted by the blast and investigators look into a possible gas cause

Witnesses described an explosion that shook Athens’ Plaka district Friday morning, saying the blast was so powerful it sent objects flying, shattered the calm and caused an old building to collapse

A powerful explosion struck a two-story building on Lysikratous Street in Athens’ historic Plaka district, causing serious damage and prompting police and firefighters to check nearby buildings for possible risks