The complaint concerns the Divača-Koper second rail track project, which consists of the construction of 27 km of single-track railway line on a new alignment to increase rail capacity between the port of Koper and the rail junction in Divača in Slovenia. In April 2021, the EIB Group Complaints Mechanism (EIB-CM) issued an initial assessment report establishing the allegations, as follow: (1) project’s negative impacts on the environment and its non-compliance with the relevant EU regulatory framework (i) compliance with the Strategic Environmental Assessment Directive, (ii) compliance with the Environmental Impact Assessment Directive, (iii) compliance with the Water Framework Directive and (iv) compliance with the Habitats Directive, and (2) lack of impact assessment of tunnels in the approval process of the relevant National Spatial Plan. In October 2022, the EIB-CM issued a Conclusions Report for the case SG/E/2020/18 regarding the same project, which had similar allegations.