MADRID -- Around 800 migrants stormed border fences separating Spain's North African enclave of Ceuta from Morocco to get into Europe, police said Thursday. The Guardia Civil said 602 migrants made it onto Spanish soil in a massive assault on high, barbed-wire fences shortly after dawn.

Migrants cut holes in the fences and threw feces and quicklime, a skin irritant, at police officers trying to hold them back, the Guardia Civil said in a statement.

They also threw stones at police vehicles, breaking windows, and hurled makeshift flamethrowers at police officers.

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The police statement said 16 migrants were taken to the hospital, while five of 15 police hurt were also hospitalized.

The Spanish Red Cross said in a tweet that 132 migrants were hurt in the mass charge, including 11 who were hospitalized with broken bones and other injuries.

INMIGRACIÓN - Cruz Roja atiende a cerca de 600 personas tras la entrada masiva de este jueveshttps://t.co/EMYq5v5ctb pic.twitter.com/L3q7VMIf2W — Ceuta Televisión (@CeutaTV) July 26, 2018

Sub-Saharan Africans living illegally in Morocco try to get to Europe each year by climbing rows of 20-feet high fences surrounding Ceuta and Melilla, Spain's other North African enclave. Those who make it across head for crowded, temporary migrant accommodation centers. They are eventually repatriated or let go.

Thursday's assault added to pressure on Spanish authorities from a recent wave of migration, mostly migrants crossing the Mediterranean on unsafe boats.

African migrants react in this still image from video after crossing the border from Morocco to Spain's North African enclave of Ceuta, Spain, July 26, 2018. REUTERS

The International Organization for Migration says so far this year more than 22,700 migrants have arrived in Spain -- three times more than in the same period last year.

Almost 20,000 of them arrived by sea, as good weather allowed more crossings on the short route across the Strait of Gibraltar and a recent crackdown by Libyan authorities had led migrants to choose other routes.