Kenneth Glover, the president of the company that operates Prince George’s Hospital Center, who has been the focus of an internal investigation into alleged kickbacks, has resigned, according to officials.

The resignation of Glover from Dimensions Healthcare System comes as federal officials continue their probe into the dealings of former Prince George’s county executive Jack B. Johnson. Johnson (D) began serving a seven-year federal prison term this month after pleading guilty last year to extortion and witness- and evidence-tampering.

In December, after links between Johnson and Dimensions emerged in court proceedings, the company launched an investigation and tapped Stephen H. Sachs, a former Maryland attorney general and former U.S. attorney for the state, to lead the inquiry.

Court filings by the Johnson prosecution team had indicated that at least one top Dimensions executive had secured his job by promising Johnson lucrative contracts. But the documents did not identify the executive, and Sachs was charged with determining the person’s identity and examining the actions of any other Dimensions employees who had dealings with Johnson.

The inquiry concluded that the hospital official noted in the prosecution memorandum was Glover, the president and chief executive of Dimensions, said Sachs, who is now at WilmerHale and who was assisted by Michael Leotta, a former federal prosecutor in Maryland. “The board considered our findings, which were communicated to Mr. Glover’s counsel, and shortly after, he submitted his resignation,” Sachs said.

Johnson was sentenced to seven years in federal prison in a widespread bribery scheme that involved pocketing hundreds of thousands of dollars from developers and business owners in exchange for favors. During wiretapped conversations, Johnson bragged about the number of jobs he’d arranged and the money he planned to make after he left office.

Sachs said he and Leotta will discuss “what, if any, further inquiry the board desires.”

Sachs said their findings determined that Glover was involved in discussing contracts for Johnson in exchange for his job. But, Sachs said, Glover was not the hospital official who helped secure an internship as a favor to a friend of Johnson’s.

C. Philip Nichols Jr., chairman of the Dimensions board, said the inquiry had accomplished its principal objective. “The Ken Glover situation is resolved, and that was the major concern.”

Glover and his attorney, Andrew Jay Graham, did not return calls seeking comment for this article.

Meanwhile, Sachs said that although Dimensions Healthcare is not the subject of a federal investigation, the system is cooperating with authorities.

Glover, who served in his position for 18 months, submitted his resignation Monday as part of a mutual agreement. Sachs said Glover will receive a severance of about $36,000, which amounts to one month’s salary.

“The board determined that this action was in the best interests of the corporation,” Nichols said of the resignation. “Our job at this point must be to move forward.”

Glover has had a close relationship with Johnson since the former county executive took office in 2003. Even though he wasn’t a member of the Johnson administration, he joined Johnson in May 2003 to meet with bond companies in New York City. He later became chairman of the Dimensions panel and later was hired as the president and chief administrative office.

Nichols said the board will meet soon to find a replacement for Glover.