Zimbabwe`s main opposition said Wednesday it had not seen a proposed constitutional amendment that would create a post of prime minister, earmarked for the party`s leader under a unity accord.

Under the power-sharing deal signed more than two months ago, opposition leader Morgan Tsvangirai would become prime minister while veteran ruler Robert Mugabe would remain as president.

The government announced late Tuesday it had drafted a text for what would be Zimbabwe`s 19th constitutional amendment, setting out the powers of the new prime minister.

But Tendai Biti, the secretary general of Tsvangirai`s Movement for Democratic Change (MDC), said the party had not seen the amendment.

`We have not seen the draft constitutional amendment number 19,` Biti told AFP.

`We don`t have it. Even if they say constitutional amendment number 19 is complete, there are a number of issues which are still outstanding,` he said. They included disputes over how the parties would divide control of powerful cabinet posts.

Information Minister Sikanyiso Ndlovu said Tuesday the amendment had been sent to former South African president Thabo Mbeki, who has mediated in Zimbabwe`s standoff.

In the government mouthpiece Herald newspaper Wednesday, Ndlovu claimed the bill had received `scrutiny by the parties concerned.`

Once the bill had been published, he said, it would undergo a 30-day public review period.

Mugabe would only appoint a cabinet after the public review, he added. The new legal affairs minister would steer the bill through parliament, which is now controlled by the MDC.

`The bill cannot be done right away without a cabinet, it cannot go to parliament if its not approved by cabinet,` added Ndlovu.

The MDC wrestled control of parliament from Mugabe`s ZANU-PF party for the first time in general elections in March.

Although Tsvangirai won the presidential election`s first round in March, he boycotted the June runoff citing state-sponsored violence against his supporters.

The two sides are locked in a standoff over the allocation of key ministries including home affairs which controls the police.