The lawyer of a teenager accused of killing two sisters who were passengers in a car has enlisted an expert to review the case.
The 19-year-old defendant, who has interim name suppression, is facing serious charges of dangerous driving causing death after the November 27 crash last year.
Tayla Alexander, 17, died and her sister Sunmara, 16, suffered critical injuries in the smash on Summit Rd in Christchurch. Sunmara, an Ashburton College student, died later in hospital on December 13 on her 16th birthday. She had suffered extensive burns and the battle to save her had meant multiple amputations due to infections.
The accused first appeared at Christchurch District Court in May charged with two counts of dangerous driving causing death, as well as dangerous driving causing injury and driving without the appropriate licence.
He is yet to enter any pleas and was remanded on bail until today.