Some of the Chibok schoolgirls kidnapped by Boko Haram nearly seven years ago have obviously escaped from their captors, a father of one of the girls told CNN.

In April 2014, members of the jihadist group Boko Haram attacked an all-girls boarding school in Chibok in the middle of the night and kidnapped 276 students . Some of the girls managed to escape on their own, while others were later rescued or freed following negotiations.

According to ABC News, Emmanuel Ogebe, a Nigerian human rights lawyer who practices in the United States and has previously worked with some of the freed girls and their families, said a parent told him that his daughter and others have escaped their captors.

“Mr. Ali Maiyanga’s two daughters were part of the few Muslim schoolgirls taken with the majority Christian Chibok girls. Information currently available to us indicates that there are other escapees with the army whom parents are anxiously waiting to identify,” Ogebe said in a statement to ABC News late Thursday. “We spoke and confirmed from Mr. Ali Maiyanga moments ago that he in fact spoke with his daughter today, who informed him that she along with others were rescued. Her sister who escaped four years ago and is on school break was overjoyed at the news of her sibling’s escape.”

Lawal Zannah, secretary of the Chibok Parents Association whose daughter was among those abducted, also confirmed the news.

“We heard that some of our girls have escaped from the forest, but we are yet to get the detail about their number,” Zannah told reporters Thursday evening.

Another parent, Malam Madu Mutta, said the Chibok community is anxiously awaiting the girls’ arrival.

“We were told they are currently with the security operatives. We are yet to know the numbers, but we are happy that some of them escaped,” Mutta told reporters Friday. “So many other parents and relatives are coming from Chibok with hopes of meeting their daughters. Again, hope is risen that we can have some of them back again.”

The kidnapping in Chibok shocked the world and led to the launch of a social media campaign in which millions of people around the globe, including high-profile political figures and celebrities, called for the girls’ rescue by tweeting the hashtag #BringBackOurGirls. However, there has been little political action.