Based on the information from the Republic of Slovenia, the orphan source of Eu-152,154 was discovered on November 29, 2004 in the truck transporting scrap lead. Measured dose rate on the surface of the truck was 130 microSv/h. Source was isolated and safely stored. After the examination, it was concluded that this source was part of lightning preventer, which was installed in the industrial zone near Osijek, Croatia. The activity of the source in 1986 was 11.1 GBq. The investigation is under way to establish circumstances which led to the loss of control of that source and eventual radiological damage done.