The jet crashed on the outskirts of provincial capital Quetta.
A spokesman for PAF said the pilot ejected safely before the aircraft came down.
"The fighter aircraft was on a routine operational exercise when it crashed due to a technical fault," said Air Commander Tariq Mehmood.
"The aircraft crashed in a vacant area and there was no loss of life and property in the area," he said.
The Air Headquarter has ordered an inquiry into the incident to determine the exact cause of the crash.
On September 20, a trainer aircraft had crashed in Loralai near Quetta in which two pilots were injured.