Some senior officers have now arrived at the incident and are formulating their plan http://t.co/v1KgmV5Y
More wearers standing by in CP suits. Wearing these is very hard work so BA compressed air cylinders don't last long! http://t.co/vUrwBTtJ
More top news
A 29-year-old Frenchman - named by police as Smail Ayad - has been arrested on suspicion of murder.
Cloudier and less warm, with showery rain on Thursday.
Showers, occasionally heavy and thundery overnight.