A boat carrying 1,200 survivors of a deadly attack by Islamic State-linked insurgents in northern Mozambique has reached safety in the port of Pemba, some of them crying on arrival after spending days hiding in the bush. Aid workers were at the port to give food to those disembarking the ferry, while police and soldiers controlled crowds of people excited to see relatives rescued during the attack that began last week in Palma, a Reuters reporter at the port said. Many people were believed to have scattered into dense forest or to have attempted to escape by boat, aid workers said. An emotional Mariamo Tagir, who arrived on the ferry, told Reuters TV that she had spent seven days in the bush, crying every day. “I don’t know where my son is. It’s very painful,” said Tagir. “The situation is really bad, many dead.” Islamist insurgents have been increasingly active in the surrounding province of Cabo Delgado since 2017, although it is unclear whether they have a unified aim or what they are fighting for. The district where Palma is located is adjacent to natural gas projects worth (£43bn) $60bn. It is home to about 110,000 people, according to United Nations estimates, of whom more than 40,000 sought shelter there after fleeing attacks elsewhere. Mozambique’s government has confirmed dozens of deaths in Palma, including at least seven killed when militants ambushed vehicles trying to escape the Amarula hotel. One South African is confirmed to have died as a result. British national Philip Mawer, who has been missing since the attack, was probably also killed in the incident, his employer RA International said in a statement on behalf of his family, adding a body matching his description had been recovered but not formally identified. “The family is devastated by the loss,” the statement said. A Foreign Office spokesperson said: “We’re deeply concerned by this latest development. We are in close contact with the family and are working with the government of Mozambique and the Met police to confirm further details. “We stand with the people of Mozambique against the threat of terrorism and are working with the government to restore peace and stability.” Military operations were ongoing on Wednesday, according to footage shot by local news station TVM, which showed soldiers carrying rocket-propelled grenades and guns in the area, as well as reinforcements arriving by helicopter. “I can’t right now say we have the whole village under control,” army spokesman Chongo Vidigal said in the footage, adding however security forces did have a presence in the port area. Reuters has not been able to independently verify the accounts from the town. Most means of communication were cut off after the attack began on 24 March. Phone calls to Mozambique’s government and security officials went unanswered on Thursday. Aid groups believe the attack has displaced tens of thousands of people. Hundreds, including many foreign workers, have been evacuated by air. As of Wednesday afternoon, a UN migration agency tracker showed more than 8,100 people had been displaced, almost half of them children. About 20% had arrived in Pemba, the provincial capital of Cabo Delgado, with others turning up in the districts of Mueda, Montepuez and Nangade elsewhere in the province. However, the full scale of the casualties and displacement remains unclear. The ferry – organised by French energy business Total in coordination with the Mozambican government and UN– docked at about 8am local time in Pemba. Total, which has a gas project on the Afungi Peninsula near Palma, said in a statement that there were almost 1,200 passengers on board, mainly women and children. A humanitarian official said the government was screening those arriving at Pemba to prevent infiltration by armed groups.