This is the dramatic moment a police officer chased down a man thought to be carrying a knife in an Essex town. The foot chase happened in Colchester in May this year. The officer had to vault a huge brick wall before he could arrest the suspect. Jordan Silifatu, 18, of Radbourne Crescent, London, was charged with being in possession of a knife in a public place and was sentenced to a four month prison sentence, suspended for 12 months, at Chelmsford Magistrates' Court on Monday, August 10 after