Police were called to reports of a boy suffering a puncture wound at the Philpotts Farm Open Space in Yiewsley, Hillingdon, west London, just after 7.30pm on Thursday.
Zaian Aimable-Lina was attacked just after 7pm in Ashburton Park, Croydon, but died around half an hour later after paramedics weren t able to save him.
At approximately 4:30am on Saturday, East London Crime Centre members were patrolling in Quigney when they spotted a suspicious vehicle parked outside a hotel in Quigney.