ISLAMABAD, Pakistan, June 16-Knowledgeable sources reported today that officials of an international aid consortium narrowly escaped death in East Pakistan last Thursday from bombs presumed to have been thrown by Bengali separatist extremists.

The incident reportedly occurred in front of the Intercontinental Hotel in downtown Dacca, Capital of East Pakistan. According to the sources, one American and two British officials were about to get into a car when three bombs were thrown, one of which exploded in the car. Bomb fragments were said to have caused some minor injuries, and the oar was demolished.

A mission of the 11-nation consortium is in Pakistan to study prospects of peace and political stability as one of the prerequisites to full-scale resumption of aid to this country.

The consortium, which includes the United States, is headed by the International Bank For Reconstruction and Development, or World Bank. [A spokesman for the World Bank headquarters in Washington said he knew nothing about the bomb report. He said the bank was in daily contact, by cable, with the consortium and had received no reports of any violence directed against the financial mission.]

AID DOWN TO A TRICKLE

United States aid to Pakistan is largely channeled through the consortium, on which Pakistan's economy is heavily dependent. Since March 25, when the Pakistani Army began suppressing the secessionist movement in East Pakistan, with heavy resultant loss of life, international aid to Pakistan has been reduced to a trickle.

Foreigners concerned with the situation report that terrorist resistance to martial-law authority in East Pakistan has increased markedly in recent weeks. They say that members of Government "peace committees" have been assassinated and that officials cooperating with the military regime there have been receiving threatening letters on official stationery overprinted with the words Bangla Desh."

Bangla Desh, meaning Bengali nation, is the name separatists have given East Pakistan. A Bangla Desh underground government is said to be functioning both in neighboring India and in a few isolated border areas in East Pakistan.

Some foreigners report that installers of irrigation wells, rural agricultural teams and other local technicians on whom the administration of aid to East Pakistan is dependent are too frightened to leave the main towns to work in the countryside.

Pakistan's financial and economic position, in the opinion of foreign economists, verges on the desperate. Government officials are rushing preparation of a new annual budget scheduled for presentation on June 26. Largely as a result of the East Pakistan situation, Pakistan's exports of such commodities as jute are understood to have fallen sharply in recent months, as has revenue from taxes.

At the same time, military spending is believed to have soared. Government officials have indicated privately that the new budget will include a very large increase in military appropriations, ostensibly because of fear of a war with India.

The resulting economic strains have produced an especially great need for foreign aid at a time when donor nations are extremely reluctant to maintain largescale aid programs.

The consortium mission, headed by I.P.M. Cargill of the World Bank, has just completed a series of talks with the Pakistani Government, including President Agha Mohammad Yahya Khan.

The substance of the talks was secret but it is believed in diplomatic circles that donor nations are insisting on a rapid political accommodation that would give the people of East Pakistan grounds for hoping they could go back to work and cooperate with the Islamabad Government.

In the absence of such popular cooperation, it is felt, no amount of aid to East Pakistan is likely to ameliorate conditions much.