Sudan has accused South Sudan’ President Salva Kiir of supporting the rebel groups that are at war with Khartoum.
Sudan accused Kiir of meeting with rebels last week in a rare public statement from Khartoum's intelligence agency.
Sudan has severally accused its neighbor, South Sudan of backing rebels in Darfur, Blue Nile and South Kordofan regions that run along its southern border.
South Sudan split away from Sudan in 2011 after decades of civil war that was fueled by ethnic divides and disputes over oil fields.
Sudan has intermittently threatened to close its border with South Sudan if it continued to support rebel groups, an allegation Juba denies.