The First Minister has told AMs that the people of Wales 'stand shoulder-to-shoulder in solidarity with the French people in this time of mourning.'
Carwyn Jones made his comments in a statement at the start of the National Assembly's plenary session.
He also urged people to be vigilant about suspicious activity.
The United Kingdom has itself suffered from terrorism. We know for a fact that a number of other attacks have been foiled at the planning stage. Arrests have been made here in Wales in the past and we know that individuals have travelled from here to Syria. We cannot be complacent about our own back yard. The public should remain vigilant and should not hesitate to contact the police if they have suspicious or unusual activity to report. Llywydd, I would also like to place on record my support and solidarity for the Muslim community here in Wales, the overwhelming majority of whom share our revulsion at the terrorism carried out in the name of a corrupted view of their religion. Muslims make a powerful and positive contribution to Welsh society and we will all stand together in opposing extremism and aggression in our community.
The Police and Crime Commissioner for north Wales will ask the Government to rethink proposed police cuts - if the terror risk level rises.
Flybe says there's been no change to passenger numbers on their flights, following the terror attacks in Paris which left 129 people dead.
A minute's silence will be held across Wales from 11am today as a mark of respect to those killed in the Paris terror attacks.