Pakistan has recalled its ambassador to Tehran, a day after Iran conducted airstrikes inside Pakistan that it claimed targeted bases for a militant group.

According to the Associated Press, Pakistan has also asked the Iranian ambassador, who was visiting Tehran, not to return.

Pakistan denounced the attack as a “blatant violation” of its airspace and said it killed two children.

The attack has also raised the threat of violence spreading in a Middle East that is already unsettled by Israel’s war with Hamas in the Gaza Strip.

Iran also staged airstrikes late Monday in Iraq and Syria over an Islamic State-claimed suicide bombing that killed over 90 people earlier this month.

Iraq recalled its ambassador from Iran for consultations.