A magnitude-7.1 earthquake rocked southern Japan Tuesday, sending shoppers sprawling and filling a crowded shopping mall with dust. That was just the beginning. Just over an hour later an explosion rocked the same building killing at least three people and leaving rescue crews working through the night to reach others trapped in the rubble.
The blast blew holes in the mall’s steel frame, debris scattering across the parking lot as hundreds of shoppers and employees, already evacuated once for the earthquake, looked on from a distance. First responders were hesitant at first, afraid to enter a building that could still collapse. By early Wednesday morning, eight people had been retrieved from the wreckage. There were three deaths. The condition of three store workers unknown.

Mall operator Aeon (8267.T) said it was looking into the possibility of a gas leak. “It’s a race against time to save those still trapped in the mall and elsewhere in the earthquake-devastated region,” Prime Minister Sanae Takaichi said of the rescue effort. Around 170 soldiers took part in Wednesday’s search.
**A blast like a bomb
41-year-old Takateru Sonoda runs a hair salon and cafe near the mall. “I thought a bomb had gone off,” Sonoda told the Jiji Press news agency. “It felt like an attack.” “People were telling others to get out, and the sirens were going off. “It was a panic situation, roads around were gridlocked.
Some 300 meters from the mall, Kazuya Tsurunaga was washing broken dishes and glasses in a pub when the blast occurred. He was already cleaning up after the earthquake. ‘A huge cloud of smoke was billowing up and because the wind happened to be blowing, and the wind direction was toward the shop, it was like volcanic ash was falling around us,’ he told broadcaster TBS.

Even before the explosion, the scene inside the mall was chaotic. The Yomiuri newspaper quoted one worker in one of the 200 stores at the mall as saying the earthquake shook the building for 10 seconds and knocked him to his knees. The quake struck about 4:30 p.m. (0830 GMT), raising a cloud of dust and adding to the panic among shoppers trying to escape, said a 22-year-old employee at the mall cinema.
Thousands evacuated, but some didn’t make it out
Aeon President Akio Yoshida told reporters Wednesday employees were able to evacuate 3,000 shoppers within 30 minutes after the earthquake. Some employees had gone back inside when the explosion occurred about 50 minutes later. “We confirmed all the customers had been evacuated. We thought that employees had also evacuated, but it later turned out that some people had stayed inside or returned for some reason,” Yoshida said. One survivor was found injured in a bathroom, he said.
A video shot by a police officer inside the mall early Wednesday shows large portions of the ceiling had collapsed, storefronts were blown open and furniture was strewn across the floor. One small bit of good news: All 25 cats left behind in a cat cafe during the evacuation were rescued Wednesday. “Thank you to the rescue workers,” the store owner wrote in a post on social media.
Police and firefighters stayed away from the rubble for hours after the explosion because of the risk of further collapse. Aftershocks continued to come. More than 100 had been registered in Kumamoto prefecture by Tuesday evening, a police official said.
A mall rebuilt after the last catastrophe
The mall, the largest in Kumamoto prefecture, had just reopened last month after a renovation to mark its recovery from a previous earthquake. The 7.3 magnitude Kumamoto earthquake badly damaged the building in April 2016. When it reopened, Aeon cited safety upgrades, including seismically reinforced ceilings, in its redevelopment.
Those upgrades didn’t stop Tuesday’s quake from causing damage, or, investigators say, from setting off a chain of events that led to an explosion.
Gas in investigators’ sights

Some rescuers at the scene reported smelling gas, Japan’s government spokesperson Minoru Kihara told reporters Wednesday. A TV reporter at the scene reported that an emergency vehicle was repeatedly telling people to stay away from the mall because of a possible leak.
The mall was running on LPG, or liquefied petroleum gas, which was pumped in from an outdoor storage tank, not piped gas from the network, officials at the mall told the Associated Press. Video of the scene showed the tank appeared intact after the explosion. The LPG system had passed a safety check as recently as last month, officials said.
In Japan, if seismic activity exceeds a threshold or a line breaks, the piping system is automatically shut off. LPG systems have similar safeguards, an official with Japan LPG sales association said. Microcomputer controlled meters will automatically shut off supply when leaks or abnormal pressure changes are detected. Meters are designed to shut down during major earthquakes. In an emergency, gas suppliers and safety service providers can also shut off the supply remotely by radio, the official said.
A gas-related cause for the explosion was “very high” in likelihood but a full investigation was needed to determine what went wrong, Yoshida said Wednesday, stopping short of confirming it.
“We did not expect an explosion of this nature to happen,” Yoshida said. “We have not had an accident like this in the years that we have operated Aeon mall.”
What’s next
Engineers assessed how stable the rest of the structure was, while rescue teams continued their search through the wreckage Wednesday for the three missing store workers. The cause of the gas system failure is still unknown despite safeguards, but aftershocks continue to rock the area and investigators have a limited time to figure out what triggered the blast before evidence becomes more difficult to access in the collapsed areas.
The explosion poses tough questions for Aeon about a building the company had just spent months rebuilding and promoting as safer than before. For the people of Kumamoto, it’s the second disaster involving the same mall in 10 years, a disaster that began with the ground shaking and ended with a fireball that few who lived through it will ever forget.












