CEUTA, Spain (AP) — At least 18 migrants died trying to reach the Spanish territory of Ceuta after thousands of people breached the frontier with Morocco and poured into the tiny Spanish territory.The border crisis boiled over Thursday and overnight. Spain’s state broadcaster RTVE broadcast images of burned cars on the Moroccan side of the border after reported clashes.Rachid Sbihi, who leads a local workers association representing Civil Guard officers, called the situation a “serious humanitarian crisis,” saying thousands of migrants, including unaccompanied children, were left sleeping in parks and sidewalks, while others roamed the streets aimlessly.

“People are still entering. The reinforcements that have arrived are only helping the injured and other humanitarian efforts,” he said. “It’s chaotic.”Spanish Prime Minister Pedro Sánchez is expected to join Interior Minister Fernando Grande-Marlaska in a visit to Ceuta on Friday morning.Among the 18 who died, many drowned, Sbihi said, but some were also killed in a stampede to cross the breakwater fence at Tarajal beach, an urban beach near a border checkpoint with Morocco.Video footage on Thursday showed throngs of people, mainly Moroccans, walking around the breakwaters onto local roads. While most appeared to be young men, there were also families with women and small children.“Viva España!” some shouted to a freelance photographer working for the Associated Press. Late Thursday into Friday, the photographer saw people amassed on the Moroccan side of the border trying to cross into Ceuta but also people walking from Ceuta toward Morocco, trying to return.Moroccan authorities have not publicly commented on the crossings, and Morocco’s Interior Ministry did not respond to requests for comment.It was not immediately clear what prompted so many people to cross to Ceuta.Spain is a main point of arrival into Europe for migrants seeking better economic opportunities or an escape from violence in their home countries.To reach Ceuta, located on the northern African coast, migrants often swim from the Moroccan town of Fnideq, covering about 3 miles (5 kilometers) to reach Spanish territory. Others attempt the crossing from the nearby town of Belyounech, where the distance is shorter.Arrivals had been increasing, but reasons are still unclear