Israel has intensified airstrikes on Iranian-linked targets in Syria, inflicting civilian casualties on at least three occasions, an independent U.N. commission said Tuesday.

Since the Israel-Hamas war began nearly a year ago, Israel has conducted dozens of airstrikes in different parts of Syria. Iran blamed Israel for the April airstrike on Iranian consular offices in Damascus that killed seven people including two Iranian generals, and Tehran responded with an unprecedented attack against Israel almost two weeks later.