Police engaging with community groupspublished at 14:46 BST
Henderson says he recognises everyone who has seen the footage of the attack will be "filled with revulsion, fear and horror".
He recognises communities will feel fear and that police will be increasing their "visible presence" over the coming days.
He says police are actively engaging with community groups across Northern Ireland "who we know will be affected by this".
With that, the news conference comes to a close.


