A building has collapsed in Nigeria’s main city of Lagos, killing 10 people and trapping scores of people.
The block of flats collapsed on Tuesday evening and rescuers have so far pulled 30 people from the wreckage.
Heavy lifting equipment has arrived at the site to help people using their bare hands to reach those inside.
But a BBC correspondent at the scene says there are fears for the trapped in the rubble as they are no longer reachable by mobile phone.
Overnight, distraught relative were in touch with those inside, but the calls had stopped by morning.
Earlier, rescuers say they heard the trapped people crying out for help.
Tears
The BBC’s Uwais Idris says a construction company sent its equipment to help with excavating the wreckage on Wednesday morning.
He says hundreds of people, some relatives in tears, are at the scene anxious to see if they can help.
The collapse happened after many of the occupants had returned from work on Tuesday evening.
“It was a gory sight. I was coming out of my house when I heard a loud bang and the four-storey structure suddenly caved in,” eyewitness Debo Ajala told AFP news agency.
Lagos state police spokesman, Bode Ojajuni, said the authorities had launched an investigation into the cause of the collapse, the agency reports.
Our correspondent says the building in the residential area of Ebute Metta was relatively new – thought to be not more than three years old.
Such collapses in the past have been blamed on substandard construction and flouting of building regulations, he says.
Dozens have died in recent years in Lagos as poorly maintained buildings have collapsed.
In March, one of Lagos’ tallest buildings caved in during a heavy thunderstorm in the heart of the commercial district. The building had been sealed off after a fire on the eighth floor.