NEW DELHI, April 12—An Indian Government spokesman said today that the Pakistani Army continued to hold onto major towns and garrisons in East Pakistan, but that it had been forced by frequent ambushes to move down main roads in units of battalion size or larger. The spokesman also said that the Pakistani forces had had to reroute supply links from Chittagong to a Ganges. River town nearer to Dacca.

Quoting from intelligence reports, the spokesman said that although Chittagong was in army hands, the road leading north to Dacca ran through territory held by insurgents who have declared their independence from the Western wing. He said the road was disrupted at several points and that ferry operators who had supported the insurgents had moved vessels away from crossing points.

As a result, he said, supplies coming by sea from West Pakistan were being sent up the river to the town of Chandpur for unloading and convoying to Dacca.

Air Supply Reported

The spokesman said that in the last three days there had been little overland movement by Pakistani Army troops. Most resupply operations to units in outlying districts have been by air, he said.

Tonight, the Press Trust of India, a news agency quoted an insurgent leader as having said that two American missionaries were killed by Pakistani troops three days ago when they attempted to stop the soldiers from shooting civilians.

An American embassy spokesman here said that he had received no confirmation of such an incident, but said that several dozen American missionaries had been in East Pakistan when the fighting began and that many had elected to stay and treat civilian casualties rather than leave on evacuation planes.

In addition, Indian press agencies reported from Agartala, India, a border town, that the independence forces had announced the formation of a government, with Sheik Mujibur Rahman, the Awami League leader, as president. The agencies quoted an “important Awami League member” as announcing the formation of the government, with a six‐member cabinet.

A similar report was put out yesterday by Indian press agencies and later retracted.