(Reuters) -Syria's de facto leader Ahmed al-Sharaa met Lebanon's caretaker Prime Minister Najib Mikati in Damascus on Saturday in a bid to improve long-fraught ties, with the pair focusing on strengthening their shared border.

Lebanese caretaker Prime Minister Najib Mikati will meet Syria's de facto leader Ahmed al-Sharaa in Damascus on Saturday, two Lebanese sources said, becoming the first head of government to visit Syria's capital since the fall of Bashar al-Assad.

Lebanon and Syria will work together to secure their land borders, as well as to delineate both land and sea borders, Lebanese caretaker Prime Minister Najib Mikati said during a visit to Damascus on Saturday.

Lebanese Prime Minister Najib Mikati met on Saturday the head of Syria’s administration Ahmad Al-Sharaa at the People's Palace in Damascus, his office said. Further details on the discussions between the two leaders were not immediately available.

Lebanon and Syria will work together to secure their land borders, as well as to delineate both land and sea borders, Lebanon's caretaker Prime Minister Najib Mikati said on Saturday in Damascus. In the first trip by a Lebanese prime minister to neighbouring Syria in 15 years,

Najib Mikati’s visit, the first in 15 years, comes amid pressure in Lebanon to release Islamists imprisoned during the civil war and just after the election of President Joseph Aoun.

Syria's new ruler and Lebanon's prime minister pledged Saturday to build lasting ties during the first visit by a Lebanese head of government to Damascus since the civil war started in 2011. Prime Minister Najib Mikati's trip came after Islamist-led rebels seized Damascus last month,

The visit by Lebanese PM Najib Mikati to Damascus marks the first for a senior Lebanese official to Syria in years