A truce between fighting tribes in Aswan has been extended for a month, Salem Abu Ghazala, deputy head of the supreme council for Arab tribes, announced on Wednesday.
Tensions in the Upper Egyptian governorate began on Wednesday last week between an Arab clan, Bani Helal, and a Nubian tribe, Daboudiya, reportedly over the harassment of a girl and offensive graffiti.
The fighting, which lasted until Sunday, killed 26 and injured 56 others.
On Monday, a three-day truce was agreed during a reconciliation meeting.
Any breach in the truce will lead to a response from the army and security forces.
Each tribe has formed a committee to ensure the truce is applied.
Meanwhile, Prime Minister Ibrahim Mahlab is scheduled to visit Aswan on Saturday and Sunday. It will be his second visit since the fighting started.
Revenge killings are commonplace in southern Egypt, often over perceived honour-related issues.