An Israeli hostage who was freed as part of a temporary truce in the Gaza Strip had previously mounted a brief escape from his Hamas captors after the building where they were holding him collapsed during a barrage, his relatives said.

Roni Kriboy, 25, was a surprise addition to the roster of hostages released on Sunday, alongside 13 women and children who had been pre-agreed in mediated Israel-Hamas negotiations.

Citing the 25-year-old’s dual Russian citizenship, Hamas said he was freed to show appreciation for Moscow, the only world power openly engaging the group during the now seven-week-old war.

His aunt, Yelena Magid, said in an interview with Israel’s Kan radio that she spoke to Mr Kriboy after his return.

“He recounted being seized by terrorists, who held him in a building that was bombed,” she said, in an apparent reference to Israeli shelling, adding that he sustained head wounds there.

“He managed to escape and to hide out, alone, for four days. He tried to reach the border. In the end, the Gazans caught him and returned him to the terrorists’ hands.”