Afghan President Ashraf Ghani arrived in Tehran on April 19 on a two-day state visit, his first official trip to the neighboring country since taking office in September.
Iran's state television showed Ghani and his Iranian counterpart, Hassan Rohani, at Saadabad Palace in Tehran, where top-level dignitaries are often welcomed.
Iran state media reported that Ghani's talks with Iranian leaders will focus on regional security, efforts against drug trafficking, and the situation of Afghan refugees in Iran.
The Afghan president is being accompanied on the trip by his foreign minister and minister for oil and mines.
Ghani's trip came a day after a massive suicide bombing in the eastern Afghan city of Jalalabad killed at least 33 people and wounded more than 100 others. Ghani blamed the attack on the Islamic State extremist group.