Israel’s military said Tuesday it carried out an airstrike targeting Hamas leadership, without saying where.

The announcement came as an explosion could be heard in Doha, Qatar’s capital.

The Qatari-funded news network Al Jazeera linked the blast to the Israeli announcement. The blast echoed in Doha, sending black smoke into the air. It wasn’t immediately clear if anyone was injured in the attack.

Hamas’ exiled leadership has long been based in Qatar, which has served as a mediator in talks between Hamas and Israel for several years, even before the latest war in the Gaza Strip.