23 October 2012 Last updated at 06:12 ET

Cardiff hit-and-runs: Matthew Tvrdon remanded at Newport Crown Court

Karina Menzies, 31, died in the collisions on Friday

A 31-year old man accused of being responsible for a series of hit-and-runs in Cardiff has appeared at Newport Crown Court via video link.

Karina Menzies, 31, died and 13 adults and children were injured in collisions across west Cardiff on Friday.

Matthew Tvrdon, of no fixed abode, is accused of murder, attempted murder and assault.

He was remanded in custody to appear at crown court for a plea hearing on 28 January.

Three adults and three children remain in hospital.

Two adults, who were critically ill, are now said to be improving.

Mother-of-three Ms Menzies died while walking with two of her children in the Ely area of the city where her family lived.

Mr Tvrdon faces a total of 19 charges, including murder, 13 counts of attempted murder, four counts of assault occasioning actual bodily harm, and one charge of dangerous driving.

South Wales Police said that the investigation is continuing, and have appealed for anyone with information to contact them.