(ANSA) - BELGRADE, 12 NOV - Crude oil shipments through the Adriatic oil pipeline (JANAF), which supplies Serbia from Croatia's Adriatic coast, have been suspended for several days following a technical accident during maintenance work. According to unofficial sources cited by independent Serbian broadcaster N1, the disruption is expected to last until at least early December to allow repairs to be completed. As a result, the Pančevo refinery, Serbia's only oil refinery, has been forced to reduce its production of petroleum products and is reportedly preparing for a "complete shutdown." However, Serbian oil company NIS, which owns the refinery near Belgrade, denied the report in a statement quoted by N1. "NIS continuously adjusts operations at the Pančevo oil refinery based on information received from its partners. NIS gas stations are adequately supplied with all types of fuel, and the company has sufficient stocks of petroleum products. In cooperation with its partners, measures are being taken to maintain supply stability in the coming period," the company said. Crude oil transportation through the Adriatic pipeline (JANAF) was suspended on November 6 following an accident along the Sisak-Slavonski Brod section of the pipeline in Croatia. During the incident, equipment fell onto the pipeline, causing it to rupture and spilling 500,000 liters of crude oil. The leak was subsequently stopped by closing shutoff valves. The spilled oil contaminated an area of land, which was later cleaned up. According to Euronews, authorities confirmed that neither the local population nor drinking water supplies were put at risk. (ANSA).