Such complaints are stimulated by a system of financial compensation (e.g. in the form of a share of the fine imposed) to citizens who inform the authorities of illegal activities (chapter 1). In the case of a serious complaint, a working group is established with the participation of the police, the Ministry' of Environment and Tourism, other relevant ministries, local authorities and NGOs. The working group reviews whether the reported non-compliance is actually happening, w'ithin the deadline of 14 days established for complaints.