"We are in close contact with the US and Iran," the Foreign Ministry told AFP.
Mediating country Pakistan says the parties have agreed on a final agreement text and that Pakistan is "working closely with both sides to finalize the next steps," Prime Minister Shehbaz Sharif said.
When US President Donald Trump said on Thursday that a deal with Iran was largely ready for signing, he added, "probably in Europe."
Earlier this week, he mentioned Switzerland as a suitable location.
