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BUENOS AIRES/MONTEVIDEO, June 13 (Reuters) - Argentina said on Friday it would take Uruguay to the International Court of Justice again for allowing UPM-Kymmene to increase pulp production at a plant it says pollutes the river between the two countries.
Argentina and Uruguay have been at loggerheads for years over the pulp mill. Finland's UPM-Kymmene is the world's top graphic paper maker.
The plant received authorization on Thursday to produce up to 1.3 million tonnes of pulp per year, up from the previously permitted 1.2 million tonnes.
Argentina said it considered Uruguay's decision as an "act of hostility" because it breaks the deal between the two countries to agree on the plant's production.
"The Argentine government has decided to go immediately to the International Court of Justice (in The Hague) given that Uruguay has broken the statute," the Argentine Foreign Ministry said in a statement.
Argentina has said the pulp mill pollutes the Uruguay River, which separates the two countries. The company said it had spent $6 million on environmental in order to receive the approval from Uruguay. (Reporting by Alejandro Lifschitz and Malena Castaldi; Writing by Sarah Marsh; Editing by Leslie Adler)