At least three people and a main contractor will be charged in court next week over the collapse of an incomplete viaduct in Upper Changi, indicating that investigations into the July 14, 2017 tragedy have ended, but signalling further delay to the halted project.

In a statement to the stock exchange last week, home-grown construction group OKP Holdings said its wholly owned unit, Or Kim Peow Contractors, and group managing director Or Toh Wat will appear in court on May 30.