A building under construction in southern Cambodia collapsed Friday, killing at least four workers and trapping others inside, police said.
The seven-story building in the coastal province of Kep collapsed while around 20 workers were inside. By nightfall, 20 injured workers had been rescued, provincial authorities said.
Nguon Samet, deputy police chief for Kep province, said the building apparently collapsed when cement was being poured on its top level.
Recovery operations were continuing with debris being removed to try to locate any people still missing.
Prime Minister Hun Sen posted on his Facebook page that he would "depart to Kep province shortly to lead the rescue team, helping to rescue the workers that got trapped under the collapsed building."