The Moroccan state news agency says a migrant from sub-Saharan Africa has died after trying to cross from Morocco into the Spanish enclave of Melilla through the sewage system.

The MAP news agency reported the man was evacuated from the sewer by local authorities along with three other migrants. He was hospitalized in the Moroccan border town of Nador and died Tuesday.

MAP said the other three migrants were treated and released.

The Moroccan government did not comment on the unusual incident.

Nador is a magnet for thousands of migrants who travel north across Africa to try to cross into Europe in Spain's North African enclaves of Melilla and Ceuta, by hiding in cars or ships, climbing over barriers or other methods.