MANCHESTER, Conn. (AP) — A cyberattack has disrupted hospital computer systems in several states, forcing some emergency rooms to close and ambulances to be diverted, and many primary care services remained closed on Friday as security experts worked to determine the extent of the problem and resolve it.

The “data security incident” began Thursday at facilities operated by Prospect Medical Holdings, which is based in California and has hospitals and clinics there and in Texas, Connecticut, Rhode Island and Pennsylvania.

“Upon learning of this, we took our systems offline to protect them and launched an investigation with the help of third-party cybersecurity specialists,” the company said in a statement Friday. “While our investigation continues, we are focused on addressing the pressing needs of our patients as we work diligently to return to normal operations as quickly as possible.”

In Connecticut, the emergency departments at Manchester Memorial and Rockville General hospital were closed for much of Thursday and patients were diverted to other nearby medical centers…Read More!