Itanagar, Dec. 12 -- A large-scale search and retrieval operation is underway in Anjaw district, Arunachal Pradesh after a truck carrying labourers from Assam's Tinsukia district skidded off the Hayuliang-Chaglagam road and plunged into a deep gorge on Monday last.

Authorities have so far retrieved six bodies, while 21 labourers are presumed dead in what is emerging as one of the deadliest road accidents in the region in recent years.

Officials confirmed that the accident came to light only on Wednesday, two days after the incident, when the lone survivor managed to reach the Chipra GREF Camp and raise the alarm. His account prompted an immediate response, with the Indian Army launching a large-scale Search and Rescue (SAR) operation late...