(Wichita Eagle) FBI officials say they're taking "very seriously" a threat against water systems in Wichita and three other cities "in this area."
However, the threat has not been substantiated by FBI investigators, FBI spokeswoman Bridget Patton said from Kansas City on Friday morning.
"The city's water is safe to drink," city spokesman Van Williams said. "If that changes, the public and the media will be notified immediately."
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Meanwhile, city officials said security has been beefed up and residents are asked to remain vigilant in the wake of the threat, which apparently is several days old.