Shimla : Four men were charred to death in Himachal Pradeshâ€™s Kullu valley , police said .
The incident took place yesterday close to Khopar village of Lug valley .
The wooden house was loacated close to an apple orachard where the men were working as pruners and were asleep when the fire spread .
The fire apparently spread so fast in the wooden complex that all the young men could not escape , there charred remains were found in the morning .
Reports quoting locals and police say the men could have been drunk when the blaze spread and were in deep sleep . A dog was also burnt alive with them .