So much for Kerry Healey's bounce.

Federal officials are probing scathing allegations that the Romney administration falsely claimed to conduct safety inspections in the Big Dig tunnel that collapsed and killed a woman in July.

The Securities and Exchange Commission is zeroing in on state financial documents from 2005 - cited in a new report by state Inspector General Gregory Sullivan - indicating that Gov. Mitt Romney was reviewing the safety of the Big Dig, when in fact the administration was only checking leaks in the Interstate 93 tunnel.

“Despite repeated assurances to bondholders, (MassHighway and Romney’s Executive Office of Transportation) . . . did not inspect the I-90 connector tunnel section where the July 10, 2006, collapse occurred,” Sullivan’s report states. “It is clear that casual disregard for the truth was grossly inappropriate.”

[...] While the inspector general’s report also cites “an alarming lack of stewardship” by the Turnpike, it singles out the Romney administration for abdicating its responsibility to verify the safety of the project.

Emphasis mine. If we tie Lt. Gov Healey to this, it's over. And God only knows what this could do to Romney's presidential bid.

For reference: Recent MA-Gov polls. Story found via DKos.