"Threats to national security are urgent and growing," said the mandate, asking for a year's extension for military action into Syria and Iraq.
The current mandate under which the Turkish armed forces launched airstrikes in Iraq and Syria expires on October 2, the official told AFP on condition of anonymity.
"The process to extend it has started," the official said, adding that the document was sent to the parliament speaker's office, having been signed by the cabinet.
It now needs to be approved by parliament.
The mandate allows the use of the armed forces in neighbouring Syria and Iraq as well as for foreign forces to transit Turkish territory in operations against ISIS extremists.
The mandate allowed the Turkish army to make a land incursion deep into Syria for the first time in late February to re-locate a historic tomb.
The terms of the mandate also permit U.S. air forces to use Turkey's Incirlik air base to make lethal strikes against IS jihadists in Syria, which have now commenced after months of negotiations.
Turkey is waging a dual offensive against ISIS militants and Kurdish rebels in Iraq and Syria after a suicide bomb attack in a town on the Syrian border by suspected ISIS militants killed 33 pro-Kurdish activists last month.
Kurdish militants then killed two police in revenge, prompting the Turkish army to launch airstrikes on bases of the outlawed PKK in northern Iraq and in the Kurdish dominated southeast.
DETAILS TO FOLLOW...
Please click to read our informative text prepared pursuant to the Law on the Protection of Personal Data No. 6698 and to get information about the cookies used on our website in accordance with the relevant legislation.
6698 sayılı Kişisel Verilerin Korunması Kanunu uyarınca hazırlanmış aydınlatma metnimizi okumak ve sitemizde ilgili mevzuata uygun olarak kullanılan çerezlerle ilgili bilgi almak için lütfen tıklayınız.