By Parisa Hafezi

DUBAI, Aug 12 (Reuters) – There have been no talks on extending a ceasefire between Iran and the U.S. under an interim deal, with Iran saying that Washington ‌must return to the pact and define a timeframe to implement its commitments, a senior ‌Iranian source told Reuters on Wednesday.

The source’s comments came after Turkey’s Anadolu news agency, citing Pakistani government sources, reported that ​Tehran and Washington had agreed to extend a 60-day ceasefire under their Memorandum of Understanding (MoU).

“One of the issues that is being discussed via mediators is the U.S. returning to the interim agreement and defining a timeframe for implementing its commitments. There has been absolutely no progress on this issue,” the source said.

The interim deal ‌signed in June between Tehran and ⁠Washington declared an “immediate and permanent termination of military operations on all fronts”, but quickly unravelled, with U.S. President Donald Trump saying on July 7 that the ⁠pact was “over”. Tehran has repeatedly accused Washington of consistently violating its commitments.

“There is no talk of an extension because … the United States violated the interim agreement 48 hours after it was reached and withdrew from it a ​few ​days later,” the source told Reuters.

In the agreement, the ​60-day period refers to an extendable timeframe ‌within which Iran and the U.S. were expected to reach a final deal, which would include larger issues including the fate of Iran’s disputed nuclear program.

A series of requirements, such as a ceasefire in Lebanon, free navigation in the Gulf and waivers for Iran to sell its oil, were viewed as necessary before entering the further negotiation period.

However, efforts to secure a lasting peace have hit an impasse over ‌a range of issues, including disagreements over the Strait ​of Hormuz.

Tehran says the vital shipping route will remain closed ​as long as the U.S. does not change ​its behaviour and accept Iran’s conditions to end the war, including the unfreezing ‌of Iranian funds overseas.

After the start of ​the war, which began with ​U.S.-Israeli strikes on Iran on February 28, Tehran effectively shut the strait, through which a fifth of the world’s oil and liquefied natural gas was shipped.

Iranian Foreign Minister Abbas Araqchi said ​on Sunday that Iran and the ‌U.S. are not engaged in talks and Tehran will not start them as long ​as Washington breaches the interim deal, adding that messages are being exchanged via intermediaries ​Pakistan and Qatar.

(Writing by Parisa HafeziEditing by Keith Weir)