She said the Prime Minister would now conduct a “thorough inspection” of all buildings in the Kariakoo area.

The president added that police would collect all details about the collapsed building from its owner.

Large crowds of passers-by cheered as rescue teams carried survivors on stretchers past huge piles of concrete debris to hospital.

Seven people were rescued from the basement of the building on Sunday, Dar es Salaam regional commissioner Albert Chalamila told The Citizen newspaper.

“We hope more survivors will be found,” he said.

It’s unclear how many people remain stuck.

Prime Minister Kassim Majaliwa said authorities “will not rest until we ensure we have been able to rescue every person or soul trapped in the rubble.”

After the building first gave way around 9:00 a.m. local time (06:00 GMT) on Saturday morning, hundreds of rescuers used sledgehammers and their bare hands to remove the debris, the AFP news agency reported.

Cranes and other heavy machinery were then brought in to help.

Fortunately, the building was demolished before the market became too busy.

Authorities have not yet determined the cause of the collapse, but investigations are expected to begin once rescue efforts are complete.

Dar es Salaam is one of the fastest growing cities in the world and reports indicate that building regulations are not always enforced.