Zarif went to Laudrian’s hotel for talks about Iran nuclear deal – known as JCPOA – and issues of mutual interest.
Iran’s foreign minister met with EU Foreign Policy chief Federica Mogherini earlier in the day.
The Iranian foreign minister arrived in New York on Sunday along with President Hassan Rouhani to attend in the 73rd UN General Assembly session.
A joint JCPOA foreign ministerial commission session is to be held on the sidelines of the event on Monday night local time.