NTSB: Plane recorders recovered from Lewis Katz's doomed jet

Federal investigators Luke Schiada and Pete Wentz search the wreckage of Gulfstream IV jet crash in Bedford, Mass. that killed Philadelphia philanthropist and businessman Lewis Katz and six others. (Credit: NTSB Twitter account)

Investigators took a big step Monday evening toward uncovering the mystery behind the doomed fate of the Gulfstream IV jet that crashed Saturday night off the runway of a Massachusetts airport and killed seven people, including Philadelphia philanthropist and businessman Lewis Katz.

Two crucial flight recording devices were recovered at about 5 p.m. from the charred wreckage of the jet in Bedford, Mass., according to a tweet by the National Transportation Safety Board.

"Cockpit voice recorder and flight data recorder just recovered from Gulfstream IV involved in Saturday's accident in Bedford, MA.," the NTSB tweeted at 5:21 p.m.

No further information was immediately available. The discoveries came shortly after a 5 p.m. press conference, at which federal investigators said the cause of the crash remained unknown.

The NTSB also announced it would hold a final media briefing at 5 p.m. Tuesday.

Along with Katz, three New Jersey women, two pilots and a flight attendant died in the catastrophe.

Contact Brian X. McCrone at 215-854-2267 or bmccrone@philly.com. Follow @brianxmccrone on Twitter.

Contact the Breaking News Desk at 215-854-2443; BreakingNewsDesk@philly.com. Follow @phillynews on Twitter.