KUALA LUMPUR, Malaysia (AP) — The leader of the pro-Russian rebels has agreed to hand over both black boxes from Flight 17 to Malaysian investigators who are in Ukraine, Malaysia’s prime minister said early Tuesday.

Prime Minister Najib Razak also said that as part of an agreement he reached by phone with rebel leader Alexander Borodai on Monday evening, independent international investigators will be given “safe access” to the site where the Malaysia Airlines jet went down en route from Amsterdam to Kuala Lumpur on Thursday, killing all 298 people onboard.