According to Belgian media, rescue workers have found a fourth and fifth bodies at the site in the Antwerp district of New South, where a school building under construction and scaffolding along the facades collapsed on Friday.

Construction workers were at work at the time of the incident Friday.

The last missing victims were found by rescuers on Saturday afternoon.

Rescue workers recovered the bodies of three construction workers from Portugal and Romania on Saturday.

Ten victims came out alive from under the rubble, nine of them are in hospital.

According to Belgian media, some construction workers were able to get themselves to safety.

The Belgian King Philippe visited the site of the accident on Saturday afternoon.

"Courage and strength to the families and loved ones of the victims, best wishes to all injured," the royal family said on Twitter.

All emergency services involved are also thanked for their efforts.

The king's visit coincided with that of Prime Minister Alexander De Croo, provincial governor Cathy Berx, interior minister Annelies Verlinden and Antwerp mayor Bart De Wever.

They were informed of the situation, spoke to rescuers and given a tour.