More than 70 firefighters battled a huge blaze which broke out in a derelict building in north-west London.
Emergency services rushed to the scene of the fire in Wembley, near Alperton Tube station, shortly after 5pm on Sunday.
Images posted on social media showed thick black smoke rising into the air as road closures were put in place in the surrounding area.
The fire, in Rosemont Road, was brought under control shortly before 7pm, the London Fire Brigade said.
A spokeswoman added: “Two people left the scene before the arrival of the Brigade and around a third of the first floor was alight.
“The fire was very visible and produced a lot of smoke, over 30 people called Brigade operators to report the fire.
“Ten fire engines were at the scene.
“The cause of the fire is not known at this stage.”
