Two disasters hit Zagreb three years ago, a pandemic and an earthquake. The city of Zagreb found itself in a crisis and information management became a priority. All of a sudden, the citizens were exposed to strong stressors. In addition, new and calming information was continuously sought and listened to. In the light of these needs, and to prevent the exacerbation of the crisis, the need for urgent cross-communication was imposed. Given the important role that the media plays in situations like this, daily activities in this area have started. For example, one of the first misinformation on March 22, 2020 was the spread of information via social networks that after the initial earthquake, even stronger ones would follow during the day. Only weeks later, after communication between the professionals, information managers and the public, it became clear that such a thing could not be predicted and calculated. What we know about earthquakes in the area of our city is briefly as follows: earthquakes in Zagreb occur at intervals of one hundred years; the maximum strength can be 6.5 on the Richter scale, but it is impossible to predict at what moment it will happen. In the information management of the Zagreb crisis, according to the foreseen protocol, representatives of the Government of the Republic of Croatia, the Mayor of Zagreb, the crisis cell of the City of Zagreb and the President of the Republic of Croatia participated first. Later on, the communication was extended towards external stakeholders to include the media and finally the citizens - affected by the earthquake. Immediately after the Zagreb earthquake, the Government of the Republic of Croatia took over the management of the crisis. Later on, at the level of Zagreb, the city authorities assumed the responsibility for communication and information management, together with citizens. Hereby we present a detailed overview of all the activities they have undertaken.