Police in Bangladesh are continuing to question two factory owners and two engineers following the collapse of an eight-storey building close to Dhaka.

The engineers are reported to have been involved in the design of the building which killed more than 300 people when it came down on Wednesday.

They have been accused of forcing staff to work in the building despite safety concerns and reports of cracks.

So far, more than 2000 people have been pulled alive from the rubble.