Two people have been injured and a number of people "unaccounted for" after a three-storey block of flats was demolished in an explosion.
The blast, on a marina near the Osney Lock area of Oxford, shook the ground and flattened the property.
A woman was hospitalised after the incident, and Oxfordshire County Council say that "a small number of people are unaccounted for" after the incident.
People in the area have said on social media that they experienced a "shockwave".
It is not yet known whether anyone was in the property when it exploded at around 5pm.
Thames Valley Police said a "small number" of people were injured in the blast.
A male was treated at the scene for smoke inhalation and a female has been taken to hospital after suffering minor injuries, South Central Ambulance Service later added.
Residents of nearby properties have also been evacuated, police said.
Firefighters said they had extinguished the blaze by Tuesday evening, though a police cordon remains at the scene.
Members of the public have been asked to avoid the area whilst investigations into the cause of the explosion continue.