Spain’s coastguard was on Tuesday searching for three migrant boats reported lost at sea by an NGO a day after rescuing scores of people from another vessel near the Canary Islands. A spokeswoman for Salvamento Maritimo told AFP a rescue plane had been deployed to the area but “did not find anything”. The coastguard has also requested other ships in the area to be on the lookout, she added. During their searches on Monday, rescuers found a boat carrying 78 sub-Saharan migrants who were taken to Gran Canaria island, she said. They had initially thought there were 86 on board. The three missing boats are believed to have left the coast of Senegal in recent weeks, according to Spanish NGO Caminando Fronteras which helps migrant boats in distress. “One is carrying around 200 people and the other two between 50 and 70 people,” a spokesman for the NGO told AFP. On Monday, Caminando founder Helena Maleno said the biggest boat had left the southern fishing town of Kafountine in the Casamance part of Senegal on June 27 with “many minors on board”, quoting family sources who said they had lost contact with the vessel days ago. Kafountine lies at least 1,700 kilometres (more than 1,000 miles) south of the Canaries. The other two boats with around 120 people on board had left the Senegalese coast on June 23, the NGO said. A Spanish rescue plane had initially thought the boat spotted on Monday was the one carrying some 200 people, but it was only on reaching the vessel that they realised their mistake. “Every minute counts if we’re to find these more than 300 people alive who are in three Senegalese pirogues which have disappeared in the Atlantic,” Maleno tweeted on Tuesday, referring to a long wooden canoe-like vessel. Senegal is one of the main departure points for migrants heading to Europe. The West African nation’s main opposition leader Ousmane Sonko on Tuesday blamed the flight of migrants on the “failure of the public policies of the regime of President Macky Sall”, calling it a “macabre and sad phenomenon”. In a tweet, he said “around 300 young people are said to have disappeared in the meanders of the Atlantic”. Sonko, a firebrand politician and Sall’s fiercest opponent, was sentenced last month to two years in prison for morally corrupting a young woman, a conviction that renders him ineligible to run in February’s elections in Senegal. In a statement Tuesday, Senegal’s foreign affairs ministry denied that 300 Senegalese migrants had disappeared at sea. “The ministry… was astonished to learn of reports on social networks of the disappearance at sea of at least three hundred (300) Senegalese would-be emigrants, whose boats from Kafountine (Casamance) were bound for the Canary Islands”, it said. “The verifications that have been carried out show that this information is completely unfounded.” The ministry said 260 Senegalese were rescued between June 28 and July 9 in Moroccan waters. It did not specify if the people found alive were on the boats initially reported by Caminando Fronteras, which said they had departed between June 23 and 27. David Diatta, the mayor of Kafountine, on Monday told AFP some migrants had recently left the village but that he’d not heard any news about them.