At least 17 people were injured after a double-decker bus crashed into a shop in Harlesden, northwest London, BBC reports. The Number 18 bus wavered and crashed into the store at Harlesden High Street around 2pm on Sunday.
Three people were gravely injured, while 14 sustained minor injuries. Kevin Brown, deputy director of operations at London Ambulance Service, said: "We treated 17 patients at the scene. We took three patients as a priority to hospital."
He added: "A further nine adults and four children with minor injuries were also taken to hospital and one was treated and discharged at the scene."
At least 20 people were helped out of the bus while 45 were evacuated from nearby buildings, London Fire Brigade said.
London Fire Brigade station manager Sam Kazmanli said: "The building has been severely damaged so a cordon has been put in place and people have been evacuated from the area."
A witness was quoted by London Evening Standard as saying: "A bus has gone into the shop front and it looks like it's come down the high street and turned right by the clock tower. It looks like it's just come off the road and gone into the shop.
"The air ambulance is there and there are so many cars I can't even count them."
The property damaged is believed to be a jewellery shop called Waves and firefighters rescued four people trapped inside by using ladders.
According to a Metropolitan Police spokesperson, police were on the site and no arrests have been made. The High Street has been closed each way between Acton Lane and Manor Park.
Tony Akers, Transport for London's head of bus operations, said a full investigation into the case will be conducted.