Papua New Guinea's Post Courier newspaper reports the mystery surrounding the disappearance of five scientists in West New Britain province two years ago could be solved by police this week.
The five scientists, who had been undertaking research for the PNG Institute of Medical Research, and three crew, have not been seen since boarding a banana boat in August 2011.
The paper reports a prison escapee and a man police suspect of involvement in the disappearances, Don Aka, has surrendered.
Aka had escaped with William Kapris in 2010 and went in to hiding in his home area of West New Britain when he was suspected of being involved in the scientists' disappearance.
His surrender is expected to help police shed some light on what has happened.