This is suggested bt the Austrian newspaper Die Presse. According to this, the source of the info that ultimately led to the re-routing of the plane and the subsequent search is US Ambassador in Austria William Racho.
First reported in Firedoglake.
From the link above (Firedoglake):
According to Die Presse, Eacho “claimed with great certainty that Edward Snowden was onboard.” He also made reference to a “diplomatic note requesting Snowden’s extradition.”
So it now seems that we know the source. It will be interesting now to see the response of the administration and whether someone will apologize to the President of Bolivia.
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