India accuses China of preparing attack on border troops

Delhi says Chinese dammed a river and lay in wait for clash in which 20 Indians died

India has accused Chinese troops of meticulously preparing an attack on its soldiers on the treacherous Himalayan border, claiming they erected a tent on the Indian side, dammed a river, brought in machinery and then lay in wait with stones and batons wrapped in barbed wire.

The incident on Monday night, in which 20 Indian soldiers died and 76 were injured, was the worst violence between India and China for 45 years. China has not said whether it sustained any casualties.