Multiple people were injured after a vehicle crashed into a medical center in Austin, Texas, officials said Tuesday.

The vehicle crashed into the emergency room at St. David’s North Austin Medical Center, Austin-Travis County Emergency Medical Services posted on social media, adding that a level four mass casualty incident had been declared.

The exact number of people hurt was unclear. The agency initially reported that at least 10 people were transported to hospitals, and one adult was administered CPR at the scene. It later said that two children and two adults were transported to area hospitals.

The Austin Police Department said in a post to social media that “there is no threat to the general public. Based off preliminary information and details gathered at this time, this incident does not appear to be an intentional act.”

No further details were provided about the nature of the crash.

This is a breaking story and will be updated.