NASHVILLE, Tenn. (AP) — A ransomware attack has prompted a health care chain that operates 30 hospitals in six states to divert patients from some of its emergency rooms to other hospitals while postponing certain elective procedures.

Ardent Health Services said it took its network offline after the Nov. 23 cyberattack, adding in a statement that it suspended user access to information technology applications such as software used to document patient care.

By Tuesday afternoon, more than half of Ardent’s 25 emergency rooms had resumed accepting some patients by ambulance or by fully lifting their “divert” status, Ardent spokesperson Will Roberts said. Divert status means hospitals have asked ambulances to take people needing emergency care to other nearby facilities. Roberts said hospitals nationwide have at times used divert status during flu season, COVID-19 surges, natural disasters and large trauma events.

The company said it could not yet confirm the extent of any compromised patient health or financial information. It reported the issue to law enforcement and retained third-party forensic and threat intelligence advisers, while working with cybersecurity specialists to restore IT functions as quickly as possible. There was no immediate timeline for resolving the problems.

Based in the Nashville, Tennessee, suburb of Brentwood, Ardent owns and operates 30 hospitals and more than 200 care sites with upwards of 1,400 aligned providers in Oklahoma, Texas, New Jersey, New Mexico, Idaho and Kansas.

Ardent said each hospital is still providing medical screenings and stabilizing care to patients arriving at emergency rooms.

In Amarillo, Texas, William Spell said he and his mother have had flu-like symptoms for days but couldn’t make a doctor’s appointment through an online patient portal because of the cyberattack.

“We are trying to figure out other options as to what to do next,” said Spell, 34.

BSA Health System – the Ardent umbrella provider for Spell’s clinic and other facilities in the city – said it was working to restore its patient portal and system for video doctors’ visits. Spell said his…