Morocco strongly condemns the recent provocative actions carried out by the Polisario in the locality of Tifariti, east of the Kingdom's defense system in the Sahara, reports MAP news agency. It also "considers that this is a new and serious violation of the ceasefire and a flagrant challenge to the authority of the UN Security Council," the Ministry of Foreign Affairs and Cooperation said on Saturday. The Kingdom, which has officially informed the President of the Security Council and its members, the Secretary General of the United Nations and the Minurso, is asking them to shoulder their responsibilities and to take the necessary measures in response to these unacceptable actions. While the Security Council is calling for resuming the political process with a view to reaching a realistic, pragmatic and sustainable solution to the regional dispute, these provocative acts by the other parties seriously undermine the efforts of the United Nations, the source said. Morocco regrets that this escalation takes place with the blessing and complicity of a neighboring country, a member of the Arab Maghreb Union, but which it violates the charter : By closing the borders and sheltering on its soil an armed movement that threatens the territorial integrity of another member, it added. Morocco officially asks the relevant UN bodies to open an international investigation to shed light on the situation in the Tindouf camps that are managed by the "Polisario" in Algeria. It also reiterates its firm determination to defend its territorial integrity and its national unity and asks the United Nations, and more particularly the Minurso, to fulfill its mandate in addressing the repeated violations of the ceasefire, the source added.