Compensation for the family of Christchurch murder victim Phil Nisbet is possible, police have reportedly indicated.
The 47-year-old truck driver's death in May 2009 was initially ruled as a suicide, but a homicide investigation was launched two years later after a coroner raised doubts.
Mr Nisbet's wife Helen Milner, 50, was was convicted in December last year of murdering Mr Nisbet by poisoning him with a sedative and finishing him off by suffocating him with a pillow.
Police have admitted shortcomings with the investigation but Mr Nisbet's sister, Lee-Ann Cartier, wants compensation.
Detective Inspector Tom Fitzgerald told TVNZ's Sunday programme, which screens tonight, that compensation was possible.