( CNN) New airstrikes targeted a town in Syria that was hit by a chemical attack earlier the coming week, activists told, less than a day after the US bombarded a Syrian air base to “send a message” to the Assad regime.

It wasn't instantly clear who conducted the ten-strikes on Khan Sheikhoun, which was hit onFriday and Saturday, though merely Russian and Syrian regime aircraft have been bombing that area of rebel-held Idlib province.

The latest attacks come after a missile strike early Friday by the United States on a base in western Syria that the United States says have allowed us to launching Tuesday's chemical assault, which left more than 85 people dead and hundreds more injured.

The Syrian us air force resumed flight operations at the base the US struck Friday. Pentagon analyse possible Russian participation in chemical assault that inspired US strike. US officials say about 20 airliners were destroyed in Friday's attack on the Shayrat base. US ambassador to the UN Nikki Haley tells United Nations the United States is “prepared to do more.” Russia says United States has no proof chemical weapons were used Tuesday.

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