Russian airstrikes have killed 30 people including 24 civilians in the ISIS stronghold of Raqqa in Syria, according to a report citing humanitarian officials.

The Syrian Observatory for Human Rights reported the deaths as well as dozens of injuries to the AFP new organization. Russian officials said that the country had conducted air raids in the area to destroy a chemical weapons factory and at training camp for ISIS fighters, according to the AFP.

The airstrikes come just days after rebel forces ended a Syrian government siege of Aleppo.

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Write to Justin Worland at justin.worland@time.com.