Men went to buy a car they'd seen advertised online when a gun was pulled on them.
Babysitter Murder: Family Tribute
The family of 19 year old Catherine Wynter - who was found dead at her sister's house in Borehamwood, Hertfordshire, the day after Boxing Day - have issued a tribute to her.
Catherine, who was also known as Katie, (right) was discovered by her mother at the house in Beech Drive at around 8am.
Her family said: "Katie was a quiet girl who enjoyed life. She was a loving auntie to her niece and nephew, who she was looking after on Boxing Day.
"We would ask not to be contacted by members of the media and that our privacy is respected to allow us to grieve together as a family."
Boy and girl died at Borehamwood & Elstree train station around 9pm on Monday night
Affinity Water hope customers will want to help them save water in future and operate more efficiently
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