Five people were killed and another five were injured after a rock-climbing wall collapsed at an outward development training center in east China's Shandong Province Sunday, Xinhua quoted local police as saying. The collapse took place at about 4:27 p.m. at the privately-run training center in the Yellow River Forest Park in Jinan, capital of Shandong Province, when 20 students and teachers from the Jinan Hanlin Continuing Education Center were having a training session, police said. Three were killed instantly and two others died en route to hospital, police said. The cause of the accident is being investigated.