At least four people are dead and 14 injured, after fire engulfed a high-rise apartment complex in the Spanish city of Valencia.
Firefighters were seen rescuing people from balconies, using cranes to reach those trapped on high floors.
The city's mayor says there are between nine and 15 people who have not yet been located.
There are fears that highly flammable cladding on the building's facade may have helped the fire spread - as in the 2017 tragedy at London's Grenfell Tower.
Some 450 people are believed to live in the apartment blocks, according to Spanish newspaper El Pais.
Spanish Prime Minister Pedro Sanchez has arrived in the region to offer his sympathies.
Earlier he pledged "whatever help needed" for the victims of the fire.
The fire, which began late afternoon on Thursday, is now mostly out, but temperatures inside the apartment blocks remain far too high for firefighters to enter the damaged building.
A family of four, including a three-year-old boy and a 15-day-old baby girl are among those missing, according to local reports.
Experts have claimed highly flammable cladding on the building allowed the fire to spread rapidly.
