The on-again, off-again Broadway musical “Rebecca” is officially off again, despite an earlier indication that rehearsals were intended to kick off Oct. 1.

Producers of the $12 million musical had been scrambling to make up a $4.5 million shortfall in fundraising that had prompted the postponement of rehearsals in early September. According to statement issued by “Rebecca” producers Ben Sprecher and Louise Forlenza, the missing funds had nearly been secured when, they claim, an anonymous email was sent to an investor with the malicious intent of scaring away the new money, and it worked.

The allegations are the latest turn in a story that has been the talk of the theater industry for the past week. The long, bumpy road for “Rebecca” has included an initial postponement in the spring followed by the fall delay, which producers attributed to the death of an investor whose identity has since been called into question.

Last week, an email had gone out to the show’s cast members scheduling an Oct. 1 start of rehearsals. That timeline has now been scuttled.

Sprecher and Forlenza also said they had provided the email to the authorities for investigation, adding that they intend to continue exploring other options for getting “Rebecca” on the boards.

The definitive cancellation of the musical’s fall start leaves the Rialto’s Broadhurst Theater current unoccupied. Given the logjam of incoming projects awaiting Gotham real estate, a new tenant for the venue will likely be named soon.