By RNZ
An Auckland man who murdered his mother and set fire to her Mt Roskill home has been given a life sentence with a minimum non-parole period of 10 years.
Linda Edwards' body was found inside her razed one bedroom unit on Rainford Street in November 2016.
Her son Kiri Paul Patira Brackenridge was later charged with murder, arson and dishonestly using her bank card.
![Kiri Brackenridge's lawyer unsuccessfully argued he was legally insane.](https://www.nzherald.co.nz/resizer/v2/KT6VKNNASI65OAPEVYRWF3J2YM.jpg?auth=5808fc52fa33cba80e6d8b8c38b8c63ce1683dfa32f82584b9fece8e9f957576&width=16&height=16&quality=70&smart=true)