SPARTANBURG, S.C. -- Dr. Thomas Roberts' license was suspended Monday by the state Board of Medical Examiners after he had been under investigation for the last year.

Documents from the Department of Labor Licensing and Regulation outline several instances of alleged misconduct.

The documents accused Roberts of engaging in sexual misconduct with staff members and patients. They also said that he would often leave nurses to complete procedures while he left the office. They said that at one point he left a patient under anesthesia for eight hours before performing surgery.

Some of the findings in the reports date back to about 15 years ago. Now, those documents were made public as one condition of Roberts' suspension.

In order to keep his license, Roberts will have to meet several other conditions. He must pay for the investigation and prosecution of his case and a $25,000 fine; enter a monitoring program for his practice; and enroll in an ethics course.

In a statement released to FOX Carolina, Roberts said, "I truly regret the grief this has caused to those close to me and greatly appreciate the tremendous support provided to me from my wife, family, staff, colleagues, patients and friends."

Roberts also underwent behavioral evaluations after he was diagnosed with a narcissistic personality and excessive daytime sleepiness, among other things.

A person who worked with Roberts called the allegations absurd.

A representative for Roberts' office said he will likely be back in practice next week.