According to the gossip website, The Star, Ben Affleck injured himself last Saturday, August 9th.
It's stated Affleck was then sent home after straining his body due to a complicated move using his left shoulder.
“It was hurting him pretty bad,” a source told the site. “He’s putting his all into this role and it’s pretty physically demanding. The trips to the gym are two, sometimes three times a day and on set he’s like a machine.”
“This injury was his first and most painful while shooting,” the source went on to explain. “Ben can act, but has been put on temporary hold from doing any stunts for a few days. That is, until the doctor gives him the OK to start again.”
If true, it seems the temporary hold has been lifted as Ben Affleck was spotted back on set.
This is the second time Ben Affleck has been rumored to be injured as last time it was stated Affleck injured his leg or chest, which some thought was a reason for the delay in production. It then came out the delay may be a result of adding in Justice League characters and the Justice League movie.
"Batman v Superman: Dawn of Justice" has a March 25, 2016 release starring Ben Affleck as Batman, Henry Cavill as Superman, Gal Gadot as Wonder Woman, Amy Adams as Lois Lane, Laurence Fishburne as Perry White, Diane Lane as Martha Kent, Jeremy Irons as Alfred, Jesse Eisenberg as Lex Luthor, Ray Fisher as Cyborg with Callan Mulvey, Holly Hunter and Tao Okamoto in new character roles for the film. Justice League is to follow directed by Zack Snyder as well.
For more news on the "Man of Steel" and related movies head on over to the Cosmic Book News Superman movie hub.