The collapse of a supermarket on Thursday evening in Riga, the Latvian capital, has killed at least 45 people, including three firefighters, with rescue workers continuing to search through the night for casualties.  The search and rescue effort continued into Friday morning at the Maxima store, which had been busy with shoppers on their way home from work when the roof fell in.  Fire trucks and ambulances surrounded the store, with rescue workers using mechanical cutters to clear debris from the single-storey concrete and glass building.  "Another dead body has just been brought out," Latvian rescue services said on their Twitter feed as the latest victim was recovered.  Rescue workers were caught up in a second collapse after they arrived at the store, situated in a Soviet-era housing development in a suburb of the capital. Seven of the injured were firefighters.  It is unclear how many people remained trapped. As rescue efforts continued on Friday morning, news agency RIA Novosti quoted the Riga mayor, Nils Usakovs, as saying 70 people were still in the building at that time.  Rescue services said 36 injured people had been rescued and police sniffer dogs were searching for any still trapped.  More than 60 soldiers were helping with the rescue effort, the army said. Latvian TV said three cranes were working to remove concrete blocks from the roof so rescuers could get inside but firefighters feared another collapse. Rescue workers were periodically turning off all equipment and asking relatives of missing people to call so that they could pinpoint the ringing phones.  The prime minister, Valdis Dombrovskis, told Latvian TV the rescue work would probably go on for many hours.  Local media said workers had been building a roof garden on the store. Police were launching an investigation. "It is clear that there has been a problem with fulfillment of construction requirements," the interior minister, Rihards Kozlovskis, told Latvian TV by telephone.  Local media reported that the Maxima supermarket, about 500 square metres in area, had been awarded an architecture prize when it was completed in 2011.
Emergency services and soldiers work through the night to retrieve many more people thought to be trapped in the rubble