According to reports on Telegram - which The Register was unable to verify - Moscow's police attributed the column of crap to "a planned air release after pressure testing during the construction of a gas pipeline."
The Ukrainian hackers, part of a group called Blackjack, allegedly disrupted some 87,000 alarm sensors, destroyed around 70 servers, and wiped 90 terabytes of data in their bid to flood the Russian capital with waste water.
If not a cyberattack or a standard pressure-testing blowout, then it could be just another example of Russia's decaying infrastructure in action.
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