Christa Pike, 50, was sentenced to death after being convicted of the 1995 murder of 19-year-old Colleen Slemmer. A US court on Wednesday halted the lethal injection of a 50-year-old female killer that would have been Tennessee's first execution of a woman in more than 200 years. Key points and original sources are listed below.

• Christa Pike, 50, was sentenced to death after being convicted of the 1995 murder of 19-year-old Colleen Slemmer.S1

• A US court on Wednesday halted the lethal injection of a 50-year-old female killer that would have been Tennessee's first execution of a woman in more than 200 years.S2