File:KS-April-17.jpg

Alleged Photo Khan Sheikhoun on a web page dated 4 April

Source (Amongst many others) http://abumahjoobnews.com/2017/04/04/%D9%85%D8%A6%D8%A7%D8%AA-%D8%A7%D9%84%D8%B6%D8%AD%D8%A7%D9%8A%D8%A7-%D9%81%D9%8A-%D9%85%D8%AC%D8%B2%D8%B1%D8%A9-%D8%AE%D8%A7%D9%86-%D8%B4%D9%8A%D8%AE%D9%88%D9%86-%D9%81%D9%8A-%D8%A5%D8%AF%D9%84%D8%A8/

It is unclear what date the photo itself is.