Slovenia on Saturday deployed additional forces along the Croatia and Hungary borders to prevent security threats after Italy has imposed border restrictions along the Slovenia border.
The Slovenian government said temporary border controls will be introduced till October 30.
According to Slovenian news agency STA, police were deployed on 14 border crossings with Croatia and Hungary.
Obrezje crossing along the border with Croatia witnessed long queues with travellers awaiting for security checks. There were no checks conducted along the border since January 1.
Earlier this week, Italy reinstated border controls with Slovenia as part of its strategy to improve home security citing threats of terrorist attacks in Europe.
"The intensification of crisis hotspots on Europe's borders, particularly after the attack on Israel, has in fact increased the threat level of violent action also within the Union," the Italian government said in a statement.
"The suspension of the Schengen Treaty on free movement in Europe became necessary...and I take full responsibility for this," Italian Prime Minister Giorgia Meloni wrote on X.
Meloni had informed that the European Union authorities were informed of the decision.
"The police measures at the Italian-Slovenian border are not adequate to guarantee the required security," read the government statement. The flow of illegal migrants was cited as a potential risk as well.