The mayor of Tijuana declared an international humanitarian crisis on Thursday following the arrival of more than 6,200 mostly Central American migrants - with more on the way.

During a press conference, Mayor Juan Manuel Gastélum called on the United Nations and other international groups to step in and assist with the massive influx of migrants, reports AZ Central. Up to 10,000 migrants could eventually end up in Tijuana, according to the federal government.

For now, the majority of caravan members who have arrived in Tijuana are camped out on a dirt baseball field at an outdoor sports arena and underneath bleachers. The city opened the complex after their other shelters reached capacity, while church groups have chipped in to provide portable showers, bathrooms and sinks. Local businesses, meanwhile, have complained of migrants panhandling and stealing. 

"They have categorically omitted and not complied with their legal obligations," said Gastélum of aid organizations, adding "So we're now asking them and international humanitarian aid groups to bring in and carry out humanitarian assistance."