The centuries-old Chawkbazar district has very narrow streets and residential buildings only inches apart. Firefighters struggled to put out the blaze, hindered by the narrow lanes and lack of water sources.The blaze was fuelled by pick-up vans in the area that carried gas cylinders, according to police chief Javeb Patowary.Victims included people outside the buildings, some guests at a restaurant and members of a bridal party, deputy commissioner of Dhaka Metropolitan Police Ibrahim Khan told AFP. A fast-moving fire killed at least 70 when it swept through a historic district of Bangladesh’s capital Dhaka.The blaze broke out Wednesday night in a residential building that had flammable chemicals stored on one floor. It then quickly spread to nearby buildings. The fire broke out at 23:40 local time (17:40 GMT) on Wednesday, Bangladesh police said.It started at a chemical warehouse on the ground floor of the building and then raced through three other buildings, Director General of the Fire Service and Civil Defence Brig Gen Ali Ahmed Khan, told BBC Bengali. Bangladesh has a persistent problem with building safety regulations not being followed.In 2013, more than 1,100 people died and thousands more were injured when a building housing garment factories called Rana Plaza in Dhaka collapsed. (Courtesy BBC) Many people were trapped in the buildings, according to reports, unable to escape the flames. One man, whose shop was destroyed in the fire, explained that he had narrowly escaped the blaze when he left to go to a pharmacy.“When I was at the pharmacy I heard a big bang,” Haji Abdul Kader told AFP.“I turned back and saw the whole street in flames. Flames were everywhere… I got burned and rushed to hospital.” Members of a bridal party are thought to be among the victims.