U.N. - Aid effort needs 50 more helicopters
The situation for tens of thousands who survived the quake but were trapped in rubble or left injured was "precarious", he told Reuters on Tuesday.
Trucks carrying emergency supplies for tens of thousands of victims had finally started moving towards the badly hit and remote mountain towns of Muzaffarabad and Balakot. The roads beyond remained blocked by landslides, said the official, who did not want to identified.
"I think from today the situation should start to improve as far as search and rescue and relief supplies are concerned; from today I am more optimistic things will start opening up.
More than 20 helicopters essential to reach remote areas worst affected had been pledged from abroad.
"Things are better than yesterday, but we still don't have enough," he said. "We need maybe 40 or 50 more helicopters beyond what we have been promised already."