A South Sudanese military official said fighting erupted Tuesday morning in Bor, the contested capital of Jonglei state, as rebel forces tried to retake the strategic town held by government troops, AP reported. Military spokesman Colonel Philip Aguer said Tuesday that government troops were fighting renegade forces loyal to former Vice President Riek Machar as well as a pro-Machar tribal militia known as the "White Army." Regional leaders last week set Tuesday as the deadline for President Salva Kiir and Machar to start peace talks.