He said the Community of the Sahel-Sahara States, a grouping of 28 African states, urged the Egyptian President to take further measures to help stabilize Libya.
"The situation in Libya is becoming increasingly complicated," Deby said in a press briefing in Cairo following his meeting with al-Sisi.
He called on Libyans to work together to reach a political settlement for the crisis in their country through dialogue.
"Neighboring states are also required to work on restoring peace and stability in Libya, whose stability is crucial to the region," the Chadian President said.
He added that more efforts should be made to implement a Libya roadmap approved by Arab foreign ministers in August of this year.
An Egyptian presidency statement, meanwhile, said that al-Sisi's talks with Deby focused on the situation in Libya, Sudan and the Central African Republic.
The Community of Sahel-Saharan States is the largest sub-regional African bloc. With members from North and Sub-Saharan Africa, it convenes two times every year.
Libya has been in political turmoil and violence since the 2011 ouster and death of long-ruling strongman Muammar Gaddafi.
In the more than three years since, rival militias have frequently locked horns, often bringing violence to the country's main cities, including capital Tripoli.
Comments appearing to trivialize racial hatred have president isolated, even within own party
The accident happened late Friday when around 650 people were celebrating inside the tent in Sankt Johann am Walde in the north of the country.
The Trump administration, wary of international involvements but eager for progress in the grueling Afghan war, has been weighing a range of options. It had originally promised a new plan by mid-July.
Melika Salihbeg Bosnawi, an important poet and intellectual of Bosnia and Herzegovina, died at the age of 72
In this gusty rural region near the Pacific coast, the wind is so strong it sometimes flips over cars and even trailer trucks.
The suspected extremists behind Spain's twin terror attacks are thought to have formed a cell in the foothills of the Pyrenees mountains where they allegedly planned large-scale assaults.
The officers had been checking on suspicious people in an area known for drug activity around 9:30 pm Friday (0130 GMT Saturday). Five minutes later, authorities received a call that officers had been shot.
The 74-year-old left for the British capital on May 7 with his prolonged absence causing tensions back home where calls have grown for him to either return or resign.
A planned referendum on the secession of northern Iraq's Kurdish region on Sep. 25 is opposed by the majority of the international community while Israel supports it.
It said that armed police then arrived and used their weapons on the attacker and "liquidated" him.
The suspect's "identity is known to the police. He is an 18-year-old Moroccan citizen," it said, providing no other details about him.
Salim al-Jubouri’s Civil Rally for Reform promises to find solutions to battered Iraq’s chronic problems
"A 22-year-old foreign national has been arrested over suspected links to terrorist activity," a coastguard spokeswoman told AFP.
'We want Syria governed by Syrians, not by the United States, not by any other forces,' spokeswoman says
Alt-right luminary departs post after mutual agreement with Trump's new chief of staff, White House says
Ould Ghada, prominent opposition figure, was arrested last week