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Director Larry Clark poses for photographers with the best movie Golden Marc'Aurelio award he just received for Marfa Girl at the 7th Rome Film Festival. (Andrew Medichini/Associated Press)

A film by Kids director Larry Clark set in a small Texan town and to be released online only has taken the top award at Rome's film festival.

Marfa Girl explores the inner life of a teenage boy and other characters in a town near the Mexican border and bustling with border patrol police.

The festival jury gave it the Golden Marcus Aurelius prize for best film on Saturday night.

Clark, whose other credits include Bully and Ken Park, says the new film won't be distributed in theatres but will be available online later this month to get around the Hollywood system.