RAWALPINDI, Pakistan, June 15 (Reuters)—President Agha Mohammad Yahya Khan has postponed the announcement of his plan for the transfer of power to a civilian government, Zulfikar All Bhutto, chairman of the Pakistan People's party, said today. The President, who rules by martial authority, said May 24 that he would announce the plan in two to three weeks time.

Mr. Bhutto, who met President Yahya here yesterday, said the delay was due to the Government's preoccupation with the budget, to be announced later this month.

Mr. Bhutto reiterated his demand for an “early and effective” transfer of power to the elected representatives, both at the national and provincial levels.

He said General Yahya was sincere about transferring power, but “a coterie of civil servants, defeated politicans and big business” had been trying to impede the process.

The National Assembly that was to have written a constitution was postponed in March. Protest strikes followed in East Pakistan, where a separatist movement was under way. The army attacked in the East and the dominant political party there, the Awami League, was banned.