Rescue teams in Tanzania say they have been able to contact people who are still trapped a day after a four-storey building collapsed in the main city of Dar es Salaam.
They are able to send them water, glucose and oxygen through small gaps in the waste.
Clattering sounds were heard inside a building in the busy Kariakoo market area.
13 people are known to have died, while 84 have so far been brought out alive, according to the latest figures from President Samia Suluhu Hassan.
He said the prime minister will now lead a “thorough inspection” of all buildings in the Kariakoo area.
The president added that the police will collect full details of the collapsed building from its owner.
Crowds of onlookers applauded as rescue teams carried the survivors on stretchers past heaps of concrete rubble to take them to the hospital.
Seven people were rescued on Sunday from the basement of the building, Dar es Salaam regional commissioner Albert Chalamila told The Citizen newspaper.
“We hope that some survivors will be found,” he said.
It is not clear how many people are still trapped.
Prime Minister Kassim Majaliwa said the authorities “will not rest until we have confirmed that we have managed to rescue every person or soul trapped in the rubble”.
After the building was vacated around 09:00 local time (06:00 GMT) on Saturday morning, hundreds of first responders used hammers and hands to remove the debris, AFP news agency reported.
Cranes and other heavy equipment were later brought in to help.
Fortunately, this building came down before the market place got too busy.
Authorities have not yet determined the cause of the collapse, but an investigation is expected to begin once rescue efforts have been completed.
Dar es Salaam is one of the fastest growing cities in the world and reports say building regulations are not always being followed.
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