The next round of talks between the United States and Iran may begin before Friday, according to two Pakistani security sources who spoke to Al Jazeera on condition of anonymity. They cited several indicators suggesting preparations for the discussions are underway in Pakistan.

The sources reported that two US C-17 Globemaster military transport aircraft landed at the Nur Khan Airbase near Rawalpindi, close to Islamabad. Roads leading from the airport to Islamabad’s Red Zone were temporarily closed, signaling heightened security measures. Additionally, guests were being evacuated from the Serena and Marriott hotels in Islamabad, and no new bookings were being accepted before Friday.

The first round of US-Iran talks took place on April 11 at the Serena Hotel in Islamabad. The developments suggest that Pakistan may again serve as the venue for the upcoming diplomatic engagement between the two nations.