The "Luther" actor said it happened during the shooting of a tense scene near a waterfall as he slipped on a rock and the branch he was holding on to snapped off in his hands, reported Guardian online.
"I nearly died. I was doing this scene - we decided to do this waterfall scene where all these child soldiers were walking behind this massive waterfall," the 43-year-old actor said.
"Cary Fukunaga, the director, decided to shoot it for real. We went to this waterfall and in this scene my character is standing there watching all the child soldiers go past...," he added.