Sylvester Stallone still working on Rambo 5 script, Oscar Jaenada joins cast

Although filming is already underway, Sylvester Stallone has taken to Instagram to reveal that he’s still fine tuning the screenplay for Rambo 5 (which may or may not be going by the title Rambo: Last Blood).

SEE ALSO: Rambo gets a new look as Sylvester Stallone announces start of filming on Rambo 5

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A Writer’s job is never done…Still working on the screen play in between shots of operating an earth mover… #rambo5 @carlfbucherer

A post shared by Sly Stallone (@officialslystallone) on Oct 21, 2018 at 11:31pm PDT

Meanwhile, Deadline is reporting that Spanish actor Oscar Jaenada (The Shallows) has joined the cast of the sequel, where he’ll feature alongside Stallone, Paz Vega (The OA), Sergio Peris-Mencheta (Snowfall), Adriana Barraza (The Strain), Yvette Monreal (Faking It) and Joaquin Cosio (Narcos: Mexico).

Rambo 5 is being directed by Adrian Grunberg (Get the Gringo) and sees Rambo crossing the U.S.-Mexican border to rescue his housekeeper’s kidnapped daughter, only to find himself up against the full might of one of Mexico’s most ruthless drug cartels.