In the past the Waqf has undertaken substantial illicit excavations on the Temple Mount. The Temple Mount Sifting Project (also here and many links) is devoted to undoing what damage can be done.
Still, I am not inclined to make a lot out of this current report.
The two photos look like the could involve just replacing a pipe, which could be necessary maintenance. In the absence of more evidence, I am not drawing any conclusions from them.
I note the story for information. I blog, you decide.
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