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An emotional plea from a mother after the deaths of her two young daughters in a car crash.
10-year-old Tamzin Portor and her seven-year-old sister Jessica were killed when the Ford Focus their stepmother was driving overturned as it left the A47 near Walsoken near Wisbech.
Today the inquests revealed the tyres were defective and Jessica was not wearing a seat belt. Their mother said it was a driver's responsibility to check these things.
Click below to watch Malcolm Robertson's report:
An inquest into the deaths of two young sisters killed in a road crash has heard that it could have been caused by defective tyres on their step-mothers' car.
Ten year old Tamzin Portor and Jessica, who was seven, were killed in the crash on the A47 at Walsoken in Norfolk two days after Christmas in 2012.
Their father's partner Marie Easter was driving when she swerved off the A47 at Walsoken in Norfolk. She admitted two charges of causing death by careless driving at Norwich Crown Court and was given a 15-month jail term, suspended for two years.
Sgt Andy Hood told the inquest the rear tyres on the car were defective. With uneven pressure on all four tyres and a damp road surface, that would have been a contributory factor in the crash.
Coroner Jacqueline Lake gave a narrative verdict, saying both girls had died from multiple injuries after their car overturned. Jessica had not been wearing a seatbelt.
The inquest is taking place into the deaths of two sisters killed in a road accident on the A47 near Wisbech in December 2012.
Ten-year-old Tamzin Portor and seven-year-old Jessica were on their way to watch a film in Peterborough as a Christmas treat.
They were back seat passengers in a Ford Focus driven by their step mother Marie Easter. Their father Alan was a front seat passenger.
Marie Easter told the Coroner she had to swerve to avoid a car coming in the opposite direction. She said she lost control and knocked herself out. She could not remember anything else.
The car overturned and the girls were killed.
Earlier this year she was given a suspended prison sentence after admitting causing the deaths of the girls by careless driving.
The girls' father Alan Portor said he was on the phone and did not see the car that Marie said she was forced to avoid, but believed her - even though others had claimed it was not true.
He said he had checked with the children that they were wearing seat belts, and they said 'yes'.
The inquest continues.
An inquest into the deaths of two young sisters killed in a car crash will be held today.
Tamzin Portor, 10, and Jessica, seven, were killed in the crash on December 27, 2012.
Their father's partner Marie Easter, 44, was driving the family for a post-Christmas cinema trip when she swerved off the A47 at Walsoken, Norfolk.
She admitted two charges of causing death by careless driving at Norwich Crown Court and was given a 15-month jail term, suspended for two years.
Norfolk Police found that Jessica may not have been wearing a seatbelt and the rear tyres of the Ford Focus had dangerously low treads and uneven pressure, which would have made it hard to control.
The girls' father, Allan Portor, suffered broken ribs in the crash. His son, Liam, 12, suffered cuts and bruises.
Easter was also injured in the crash.
The inquest is due to take place in King's Lynn.
Latest ITV News reports
A mother has pleaded with drivers to look after their vehicles after two young sisters died when the car they were in came off the road.