One of the nation's leading movie directors has been refused permission by Iranian authorities to leave the nation to be an honorary guest at this year's Berlin Film Festival, the Berlinale announced Tuesday.

The announcement that Jafar Panahi had been denied permission to leave Iran came as the latest movie from another leading Iranian director, Rafi Pitts, premiered at the Berlinale, which is one of the world's top film festivals.

Pitts criticised the decision to refuse Panahi permission to leave Iran at a press conference marking the screening of his film in Berlin.

Pitts further added," I don't believe in borders. I don't think it is fair for him not to travel."

Pitts' movie "Shekarchi" (The Hunter) tells the story of a man who kills two policemen in revenge for the death of his wife and daughter, which was apparently linked to a police shootout with protestors.

The movie was shot during the buildup to Iran's controversial presidential election last June when the outcome of the polls triggered mass demonstrations in the nation.

Pitts both directed and played the main character in the film.

Pitts said," As a filmmaker it is my job to take the pulse of the situation. But it is also to ask questions, but maybe not to find answers."

Shekarchi is also this year in the 20-film race for the coveted Golden Bear for best film at what is the Berlinale's 60th anniversary festival.