Fourth man questioned in connection with murder of Olivia Pratt-Korbel

Flowers are left near to the scene of an incident in Kingsheath Avenue, Knotty Ash, Liverpool, where nine-year-old Olivia Pratt-Korbel was fatally shot (Peter Byrne/PA)

A fourth man is being questioned in connection with the killing of nine-year-old Olivia Pratt-Korbel.

The 34-year-old, from Liverpool, was arrested on suspicion of assisting an offender after he was stopped by officers on the M42 near Leamington Spa in Warwickshire, Merseyside Police said.