Geneva on maximum alert in hunt for four Paris attack suspects
Security guards at European UN headquarters carry submachine guns and officials are working with French police
Geneva security officials have said they have raised the alert level in the city and are looking for suspects in connection with investigations into the Paris attacks on 13 November.
Policemen armed with submachine guns were posted at the entrances to #United Nations institutions as well as the airport, train station and other key landmarks. UN buildings were evacuated shortly before midnight on Wednesday night.