ANKARA, Turkey — Saudi Arabia, Turkey and Pakistan signed a defense agreement on Friday, Pakistan’s Foreign Ministry said, deepening cooperation between the three regional powers at a time of growing security concerns. The agreement was signed in the Saudi holy city of Mecca during a meeting between Saudi Crown Prince Mohammed bin Salman, Turkish President Recep Tayyip Erdogan and Pakistan’s Prime Minister Shehbaz Sharif. Saudi Arabia, whose critical infrastructure and oil facilities have come under attack as part of the war in Iran, has been looking to diversity its defense partnerships. In September, Pakistan and Saudi Arabia signed a mutual defense pact that defines any attack on either nation as an attack on both. The agreement also comes amid rising tensions between Turkey and Israel over Gaza and other regional conflicts, including the war in Iran and Lebanon.