The explosion happened around 8:45 am. A safety zone has been declared around the building to prevent people getting hurt by falling debris. Most windows on the twelfth and thirteenth floors were shattered. Three flats have been declared uninhabitable.
The fire department has evacuated one heavily injured person and three people with minor injuries. The remaining 21 inhabitants of the block have been evacuated as well. There is no danger of further explosions or falling debris.
The cause of the explosion is still unknown, but is suspected to be a gas stove accident.