The star first sustained the injury while doing a stunt while filming in Dublin in December. At the time, filming was only temporarily suspended while she took time to heal.
The Hollywood Reporter now cites sources stating that the actor's initial hand surgery did not go as planned, meaning she must now undergo a second surgery, with added time to heal and recover.
The sources add that, in light of this, production has been indefinitely suspended, with crews told to find other work. Just under half the film has been reportedly shot, with another source stating it could be at least five months before production can resume.
Producers confirmed the shutdown in a statement on Monday: "Hiatus on the production of The Rhythm Section has been extended due to the hand injury Blake Lively sustained while filming an action sequence on the action thriller at the end of last year."
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Before Lively's injury, The Rhythm Section was a hype-inducing project from Bond producers Michael G. Wilson and Barbara Broccoli, of EON Productions, and The Handmaid's Tale director Reed Morano.
Also starring Jude Law, the film was adapting the first book of Mark Burnell's Stephanie Patrick series, with Lively playing a woman whose life is thrown into chaos after the death of her family in an airplane crash - a flight that she was meant to be on.
After she discovers the crash was caused by an onboard bomb, she undergoes a complete self-transformation into a deadly assassin, hell-bent on tracking down those responsible.
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