Wait...gang members behind Nigerian boy Showkey's murder are gloating online?

A friend of Nigerian boy Leoandro Osemeke a.k.a. Showkey, who was stabbed to death in Peckham last Friday, posted this screenshot on twitter on August 6th.
"So they commit a crime and go straight on Insta? #RIPShowkey" ru2 @Itsmonclair captioned the photo which shows three teen grinning.

16-year-old Osemeke was killed months after his best friend Myron Issac-Yarde, a 17-year-old rapper was killed in New Cross. A 15-year-old was arrested yesterday in connection with the murder. He was remanded in custody to appear at the Old Bailey on Wednesday, August 10.