In addition to U.S. and coalition strikes, Iraqi fighter aircraft have also attacked ISIS targets inside Syria recently.
In an examination of drone strikes this year alone, AP found that at least 30 of the dead likely did not belong to al-Qaida.
The announcement appeared aimed at suggesting that the Saudi government was behind the decision.
The U.S. has carried out over two dozen such airstrikes this year against the al-Qaida-linked al-Shabab.
The strike took place Thursday when the mosque was being used by ISIS to coordinate attacks on coalition forces.
The U.S. Marine Corps' F-35B made its combat debut this week, conducting its first strike in Afghanistan.
Afghan and U.S. forces resumed fighting after the Taliban chose not to extend a short cease-fire.
Fighter, attack and remotely piloted aircraft together dropped nearly 600 weapons in the month of May.
Iraqi Shiite forces and Syria accused the United States on Monday of targeting their troops inside Syria with an airstrike.
UNAMA released a report saying that a total of 36 people were killed in the April 2 attack.