Alhassan was quoted as saying this during an interview with CNN, when the news agency visited the hostel where the 21 girls live.
“But behind their smiles and brightly coloured clothes lurk memories of their dark past. One of them was absent to remove shrapnel still embedded in her body, Alhassan said.
“CNN was told that some of them had shrapnel wounds from their time with Boko Haram and some still have shrapnel in their bodies that need to be removed. But no further details were given about how many of them are being treated for this.
“Three of the rescued girls told CNN that they were happy with their living conditions,” the report read in part.
One of the girls, Rebecca Mallum, said they take part in structured programmes, including games and recreation.
She said: “I really enjoy tailoring and catering. I want to be a doctor in the future because I want to help people.”