The sci-fi thriller were in the middle of filming the upcoming season but have had to stop due to a recurring cast member having an emergency off set.
HBO told Deadline: “Due to a medical emergency involving a performer in a recurring role on season 2 of Westworld, filming on one of the two units has been temporarily suspended.
“The cast member was not on set when this occurred, and out of respect for the performer’s privacy, we have no additional details to share, other than that everyone at Westworld sincerely hopes for a quick recovery.”
According to TMZ, the injury was sustained by a male cast member who had fallen and hit his head at home.
The hit show’s main cast includes Thandie Newton, Evan Rachel Wood, James Marsden, Jeffrey Wright, Ed Harris, Talulah Rilel and Louis Herthum.
Westworld season two was expected to be released in Spring 2018 but it’s now unknown whether the production delay will push the date back.
In July, a jaw-dropping trailer teasing the upcoming season was released just one week after they had begun filming.
The clip showed the series is following on from the dramatic end of season one, which saw cowboy robots, or ‘hosts’, rebel and begin to attack human visitors in the sinister theme park.
The teaser opened with a mechanical piano creaking to life, before the shot cut to one of Bernard Lowe (played by Jeffrey Wright) standing in a flooded field covered in mud as he gazed down at the corpse of a tiger
Another creepy scene in the clip showed a man hanging from a tree by his legs, desperately trying to grab a nearby gun lying on the ground.
Westworld will return to Sky Atlantic in 2018.