Saudi Arabia, Pakistan and Türkiye have signed a joint defence agreement aimed at strengthening their collective defence capabilities against aggression, Pakistan's Foreign Office said.

The agreement was signed during a trilateral summit involving Saudi Crown Prince Mohammed bin Salman, Pakistani Prime Minister Shehbaz Sharif and Turkish President Recep Tayyip Erdogan, according to the Foreign Office.

Under the agreement, an attack on any one of the three countries will be regarded as an attack against all three, the Foreign Office said.

The pact is intended to enhance coordination and joint defence capabilities among the three countries in response to potential security threats and acts of aggression, it added.

Earlier, Sharif met Saudi Crown Prince Mohammed bin Salman in Makkah, with Pakistan's Field Marshal Asim Munir and other members of the delegation also attending.

The meeting focused on regional developments and ways to further strengthen the strategic partnership between Pakistan and Saudi Arabia, according to Pakistani officials.

The trilateral summit is being held in Jeddah, where the leaders are expected to discuss regional security and efforts to promote peace and stability.

Turkish President Erdogan arrived in Jeddah to attend the summit, Turkish media reported.

Sharif and Munir had travelled to Saudi Arabia a day earlier at the invitation of the Saudi crown prince. The Pakistani delegation also performed Umrah and offered prayers inside the Kaaba, according to Pakistani officials.