PERN said pumping on the damaged Druzhba line, which delivers oil to Germany, was immediately switched off and the scene had been secured.
Polish pipeline operator PERN said Wednesday that a leak detected on one of its Druzhba pipelines bringing oil from Russia to Europe was likely caused by an accident.
The leak was detected on Tuesday evening on one of the two lines of the Western section of the pipeline, PERN said in a statement.
PERN said pumping on the damaged line, which delivers oil to Germany, was immediately switched off and the scene had been secured.
The Druzhba pipeline, which translates as "friendship" in Russia, is one of the biggest oil pipeline networks in the world, delivering crude from Russia to much of central and eastern Europe including Germany, Austria, the Czech Republic, Hungary, Belarus, Poland and Slovakia.