A spokesman for the Metropolitan Police said:
"All lines of inquiry were considered in the early stages of the investigation. The investigation was detailed and complex and officers had a duty to explore every avenue of inquiry and retain an open mind about the circumstances.
"They carried out numerous actions including door-to-door inquiries, leaflet drops, searches, interviews and forensic analyses.
"The CCTV evidence took some time to collate and analyse but then clearly showed a veiled suspect trailing the victim before the attack.
"Konye was arrested as the investigation progressed."
More top news
Mike Gapes revealed the bitter splits and turmoil after publicly declaring the party had 'no credible leadership.'
London's mayor took hold of professional dancer Charlotte Gooch and led her in a waltz in Hankyu, Osaka.
Cancer survivor Karl Andree, was arrested in Jeddah last year after bottles of home made alcohol were found in his car.