Relatives of those who died in Saturday's train crash in China have visited the site of the accident and have paid tribute to their loved ones.

Family members laid flowers below the viaduct close to the eastern city of Wenzhou where four train carriages fell alsmost 30m (100ft).

Forty people died in the accident and several mourners expressed frustration at how the railways ministry dealt with the horrific tragedy.

Officials are speculating that a faulty signal may be the reason for the crash.