In a ceremony attended by Iranian President Hassan Rouhani and his Afghan counterpart Ashraf Ghani, high-ranking officials from the two countries singed the documents.

In a joint press conference earlier on Sunday, Rouhani said Tehran and Kabul have agreed to boost cooperation in the fight against terrorism and drug trafficking.

Heading a high-ranking delegation, Ghani arrived in Tehran on Sunday morning for an official visit at the invitation of his Iranian counterpart.

In his first visit to Iran as Afghan president, Ghani is accompanied by Foreign Minister Salahuddin Rabbani, Finance Minister Eklil Ahmad Hakimi, Mines and Petroleum Minister Daud Saba, and Minister of Refugees and Repatriation Sayed Hussain Alemi Balkhi.

The Afghan president had planned to travel to Iran in early March but postponed his state visit due to a fatal avalanche in his country that left more than 280 people dead.