Police launched an arson inquiry after a fire ripped through a shopping centre on Leicester's so-called Golden Mile, amid reports of floors collapsing.
At its height more than 60 firefighters tackled the blaze at the Belgrave Commercial Centre, on Belgrave Road, which started at 22:00 GMT on Sunday 4th Janauary.
Leicestershire Police believe the fire was "started deliberately" and have launched an investigation. The centre contains units including a grocer and clothes retailer.
The Mirch Masala restaurant has been damaged by the fire. No-one has been reported injured in the incident. Det Insp Mark Parish said: "A number of people were in Belgrave Road at the time of the fire, including people recording the incident on their mobile phones.
"Please check these, and if you have any information which you believe may help us - no matter how insignificant it may seem - get in touch."
He has also urged anyone with CCTV or dashcam footage to contact the force. Shamira Ayoob, who lives nearby, said she had been receiving texts from worried family and friends since it started.
"We're safe, we're not in danger but just sad that it's all gone," she said.
Several businesses seem to have been damaged inside the centre, but the emergency services have not confirmed any details. Belgrave Road has reopened to traffic, although Macdonald Road and Law Street remain closed. The Golden Mile is renowned for its shops selling gold and saris as well as its authentic Indian restaurants.