Morocco and the pro-independence Polisario Front have exchanged fresh gunfire in the Western Sahara.
The pro-independence Polisario Front said that conflict in the Western Sahara would end once Morocco stops its "occupation" of the disputed territory.
Morocco's official news agency said the army responded to fir by the Polisario Front along the UN-patrolled buffer zone in Western Sahara.
Truck traffic resumed between Mauritania and Morocco a day after Rabat launched a military operation to reopen a key highway in the Western Sahara.
Mauritania and Algeria urged Morocco and the Polisario Front to uphold a three-decade-old ceasefire in disputed Western Sahara.
The Polisario Front said the three-decade-old ceasefire in the Western Sahara is now over.
Morocco has announced operation in the Western Sahara in response to 'provocations' by the Polisario Front.
Algeria's constitution has long retained that the country must protect its border from foreign attacks but cannot intervene in foreign wars.
A European institute should be formed to train imams across the region, the EU chief suggested on Monday, amid weeks of heightened tensions.
The UAE became the first Arab country to open a diplomatic mission in the Western Sahara.