The man found guilty of murdering two Work and Income staff members in Ashburton in 2014 is appealing against his conviction.
Russell John Tully, 49, was found guilty in March of the fatal shooting of Peggy Noble and Leigh Cleveland, which took place in the Work and Income office, on 1 September 2014.
Tully was also found guilty of attempting to murder case manager Kim Adams, but was found not guilty of attempting to murder Lindy Curtis, who was shot in the leg.
Last month he was sentenced to life in prison with a minimum non-parole period of 27 years.
A Court of Appeal spokesperson confirmed Tully had lodged an appeal last week against his conviction and sentence.
No date for the appeal has been set.