MYSTERY surrounds the cause of a major blaze on a bus in Bradford.

It happened on Broadway in the city centre one week ago - on October 9 - and sent plumes of thick black smoke billowing into the air. 

Firefighters from Bradford and Shipley attended the incident after being called to the scene shortly after 3pm. 

They were met with a scene described like that from a TV show, according to one woman who was working in a nearby building but wished to remain anonymous.

The driver of the bus only left the bus after he was alerted to smoke coming from a window on the top deck by a queueing passenger.

This morning the Telegraph & Argus asked West Yorkshire Fire and Rescue Service if it had carried out an investigation into the blaze and, if so, what the outcome was. 

A spokesperson for the fire service said: "Our fire investigation unit was requested to attend the bus fire in Bradford to determine the cause of fire. 

"No further information is available at this time."

A spokesperson for First Bradford said last week: "One of our buses on the 607 service was involved in a fire incident on the upper deck.

"The bus was situated at Broadway during a changeover. 

"There were no passengers on board and our driver acted calmly and professionally in alerting the emergency services who attended the scene and extinguished the fire."

The spokesperson added: "We do not know what caused the fire and will assist the investigation including a review of CCTV footage."

The T&A asked First Bradford this morning if it knew what caused the fire and is awaiting further information. 

A spokesperson for West Yorkshire Police said there was nothing to suggest the fire was suspicious.