Detective Superintendent Helen Millichap of Newham Police described the attack on the 16 year-old as "really unusual". She hopes the attacker will quickly be identified.
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The Dabbous restaurant in Fitzrovia, central London, has been ranked zero by the Food Standards Agency.
The campaign involved blasting dirt off the streets in Shoreditch. The council says the intelligence organisation did not have permission.
Marta Ligman may have been alive with just minutes of air left in the suitcase when Kocik was seen on CCTV dragging her from their flat.