Spain and Morocco reinforced the border fence of a Spanish enclave on Friday and appeared to have largely halted mass crossings after tens of thousands of people arrived by sea and land in a day, with at least 19 dead bodies found in the water.

A wave of adults and children entered the North African territory, and more are expected.

Some migrants swam while others walked around a breakwater and crossed rocks after instructions spread on social media on how to enter the Spanish enclave of Cueta.