CCTV shows teen murderer Nicholas Prosper buying gun day before killing his family

This is the chilling moment teen murderer Nicholas Prosper buys a gun in carpark the day before he went on to murder his family.

CCTV shows teen murderer Nicholas Prosper buying gun day before killing his family

This is the chilling moment teen murderer Nicholas Prosper buys a gun in carpark the day before he went on to murder his family.