A panel of judges are reconsidering the David Tamihere double murder conviction 33 years on.

His case is being heard in the Court of Appeal.

Tamihere was convicted of killing two Swedish tourists in 1989, and released on parole in 2010.

Open Justice reporter Ethan Griffiths says it's being claimed the convictions were predominantly based on circumstantial evidence.

"Tamihere's lawyer essentially told the court developments since the trial raised doubt over the convictions." 

LISTEN ABOVE

• David Tamihere: Claims he murdered two Swedish backpackers are "ludicrous"
• David Tamihere's murder convictions will be heard by Court of Appeal again
• David Tamihere appeal: Lawyer claims convictions relied on dangerous evidence