(ANSA) - BELGRADE, JUN 2 - On Tuesday, Slovenia's administered price of regular petrol fell by 11.1 cents to EUR 1.603 per litre, while diesel fell by 10.6 cents to EUR 1.647. Fuel prices are only regulated outside Slovenia's motorway network, while retailers continue to set prices freely along motorways and motorways, according to Slovenian news agency STA. (ANSA).