Morocco is blaming last week's massive surge of migrants into the Spanish enclave of Ceuta on various factors, including "malicious exploitation of digital platforms" and the spread of misleading information. Most of the migrants were sent back home by Spanish officials after the sudden — and deadly — border rush. Some Moroccan migrants told CBS News they saw social media posts stating, "Spain is an open door," along with videos of people swimming from Morocco to Ceuta. Most of the migrants who surged into Ceuta had returned to Morocco by Sunday, with many simply walking back across the border. Spanish officials said they plan to add fencing around Ceuta.