Below is a tournament statement relating to security following the events in Paris last night:
Our deepest condolences are with all those affected by the tragic events in Paris.
Following the events overnight, we have reviewed security operations in place around this years Barclays ATP World Tour Finals.
The O2 already has enhanced security in place, and tournament preparations are continuing as normal. Venue security is monitored at all times to ensure the safety of all our visitors.
No food or drink will be allowed into the arena itself and all bags will be searched. No bags larger than a small laptop bag or handbag will be permitted in The O2 during the tournament and visitors are urged to travel light, as there is no storage on site.