People in Nairobi have been asked to leave their homes near a six-storey building that collapsed in heavy rain, killing at least 12 people.

The Kenyan President has visited the disaster site and said the building's owners should be arrested.

A baby was among 134 people pulled from the rubble and rescuers are searching for more people who may be trapped.

The buildings to be evacuated are home to more 1,000 people and are built next to a river bank.