A construction magnate and more than a dozen other people have surrendered to police on criminal negligence charges for the collapse of a Bangkok high-rise during a March 28 earthquake.

A construction magnate and more than a dozen other people surrendered to police on criminal negligence charges for the collapse of a Bangkok high-rise in an earthquake.

A watchdog organisation flagged days after the quake that corruption may have been involved in the building's construction. Initial tests of materials gathered at the site in March indicated the presence of substandard steel among the wreckage structure,