Police are investigating the unexplained deaths of two women at the same location in Mount Gambier over the weekend. Just before 4pm on Friday,&nbsp;September 2, police were called to a block of flats on Cardinia Street after reports of a sudden death.&nbsp;Then just after noon on Sunday, September 4, police were called to the same block of flats following another sudden death. Mount Gambier Crime Investigation Branch,&nbsp;with assistance from Major Crime Investigation Branch, is investigating circumstances surrounding the deaths. At this stage, the deaths are&nbsp;being treated as unexplained. Police are appealing for anyone who may have any information that can assist the investigation to contact Crime Stoppers on 1800 333 000 or visit the website.