Liquids On a Plane: The Prequel?

Via Hot Air, DNA India reports (not entirely credibly, perhaps) that explosives were found on an American Airlines flight last Monday that was bound for Boston, but returned to Heathrow when a passenger was determined to be on the no-fly list.

Masked explosives capable of destroying an airplane midair were recovered in a tense operation from a family travelling from London to Boston.

A source at Heathrow airport recounted the drama. The five-member family — two adults and three children — boarded American Airlines Flight 109 for Boston. They checked in at the last moment, inviting only a perfunctory check of the children’s hand-baggage.

After the aircraft took off the check-in computer at the airport flashed a warning that a person under observation had boarded the flight. Airline staff informed immigration and security officials. A background check revealed that the male adult member of the family was on a suspect list prepared by Scotland Yard after the 7/7 terror attacks in London.

As Allahpundit observes, it's not completely clear that the report is inaccurate, but in light of the dominant news story over the last 36 hours, why would this not have been picked up elsewhere by now?

Other than as described above, the article doesn't specify the nature of the materials reportedly found, other than to classify it as "deadly cargo", which was apparently found in one the children's carry-ons.

A Google News search for "American Airlines 109 explosives" retrieives precisely two stories - the one quoted above and the Hot Air post.

What gives?  Any legitimacy to this report?