"They were part of a group of JKR staff who were participating in a team-building programme at the river."

" ...said the group, which consisted of 22 participants from the Seberang Perai Tengah and Langkawi branches of the public works department (JKR)..."

The event company that organized this shd be sued. They onli want profit and not do a risk assessment before letting amateurs in the river.