Police have urged an anonymous caller who phoned Crime Stoppers with information about the mysterious cold case river death of a Victorian father to contact them again. Terrence McCallion, 55, died after plunging into the Murray River near the Victoria-New South Wales border nearly six years ago. The beloved father was located fully clothed in the water by passers-by onboard a houseboat between Bruce's Bend and Psyche Pumps in Mildura about 3pm on May 1, 2015. Police launched a renewed appeal for information in relation to the man's death on Monday, with an anonymous caller subsequently contacting Crime Stoppers. "Investigators from the Mildura Crime Investigation Unit are urging an anonymous caller to Crime Stoppers to contact them again with information about the death of Mr McCallion, who was found unresponsive in the Murray River almost six years ago," a police statement read.