The Israeli military shed light Wednesday on the circumstances surrounding the deaths early this year of six male hostages who were found shot in a Gaza tunnel—and whose captors were also found dead at their side.

The deaths of six Israeli hostages whose bodies were recovered from Gaza in August were probably linked to an Israeli airstrike against Hamas near where they were being held, the Israeli military said on Wednesday.

President-elect Donald Trump pledged to exact vengeance unless Hamas militants release every Israeli hostage before his inauguration in January.