A nine-storey illegal garment factory has collapsed near Bangladesh's capital, Dhaka, killing at least 26 with around 200 said to still be trapped inside.

Nearly 100 people have so far been rescued alive from the building, which collapsed during last night's Monday night shift at Shahriar Fabrics at Palashbari, which is located 30 km from Dhaka.

Police believe that the collapse was likely to have been caused by a boiler explosion, while the fire brigade is currently investigating the root of the disaster.

Government Ministers say that the factory had been established without planning permission.