Two men arrested by detectives investigating the murder of a man outside a school in west Belfast have been released unconditionally.
The men, aged 49 and 51, were arrested on Wednesday night and released on Thursday evening.
Jim Donegan, 43, shot in his car as he waited for his 13-year-old son near St. Mary's Grammar School on Tuesday.
The Police Service of Northern Ireland (PSNI) has released CCTV footage of the gunman before and after the shooting.
It shows the gunman walking to and from the scene.
Inspector Peter Montgomery described the murder as a "barbaric assassination".
The gunman walked past the children and fired eight times, he added.
The shooter was wearing a hi-vis yellow jacket with "Security" printed on the back and carrying a dark bag.
Police believe the gun was in the bag.
After the murder, back up Glen Road and along the lane on Clonelly Avenue.
Police have thanked people in the community who have helped them and appealed for more information or dashcam footage.