WICHITA, Kan. (KAKE) - Ascension Via Christi says it detected unusual activity in its network systems Wednesday. Since then, the hospital has been put on diversion. This means all patients coming in by EMS are sent to other hospitals. 

“This doesn't surprise me,” said Lisa Watson, a registered nurse at Ascension Via Christi St. Francis. 

Watson heard about a cyberattack on Wednesday. The hospital says first it saw unusual activity, then determined someone attacked its computer systems.

"So, our systems are all down at St. Francis. We have canceled most of the OR and they have also been impacted for tomorrow. Our burn program is out of commission...” said Watson.

In a statement, Ascension says in part:

"Our care teams are trained for these kinds of disruptions and have initiated procedures to ensure patient care delivery continues to be safe and as minimally impacted as possible. There has been a disruption to clinical operations, and we continue to assess the impact and duration of the disruption."

The attack means nurses and doctors have to work old school. 

“We are paper charting we have definitely gone back in time. Code blue and rapid responses for the hospital the system is not working so they were having to call them overhead,” said Watson.

Watson adds the food service industry is down at the hospital, so nurses can't get patients food in a timely manner.

Ascension says if any sensitive patient data was compromised in the hack, it will notify those affected,

“My concern is that the information in these computers has protected health information for the residents of Sedgwick County. So I’m very concerned about what will happen next time,” said Watson.

Ascension Via Christi says it has a third-party expert assisting in the investigation.