Gibraltar's Football Association has decided to part company with coach Allen Bula with immediate effect.
Bula had been in charge of the team since November 2010.
A Gibraltar FA statement said "after a thorough and careful investigation into internal matters" it had decided "an immediate change was appropriate".
"It is not a decision that has been reached lightly or hastily," the organisation added.
"The Gibraltar FA is committed to safeguarding football on the Rock and ensuring that the national team remains the pinnacle of Gibraltarian football.
"Consequently the search for a new Gibraltar national team manager will begin immediately."
Gibraltar have lost their four Euro 2016 qualifiers and next play Scotland on 29 March.