A 19-year-old girl has been charged with murder following the death of young mother Nattalie Muir in Whitburn, West Lothian.
Emma Merrilees, 19, from Edinburgh, is due to appear at Livingston Sheriff Court on Monday.
She appeared in court earlier this week charged with attempting to pervert the course of justice.
Two males, aged 34 and 15, also appeared in court this week charged with the 21-year-old's murder.
Ms Muir died at Wishaw General Hospital after an alleged knife attack in Whitburn at 0300 GMT on Saturday.