BELMONT COUNTY, Ohio -- Two local police chiefs and a mayor's son are expected to be charged in connection with an ongoing investigation regarding the surrogate mother for actress Sarah Jessica Parker and actor Matthew Broderick.

Martins Ferry Police Chief Barry Carpenter, Bridgeport Police Chief Chad Dojack and Bruce Callarik, the son of Bridgeport’s mayor and Dojack's father-in-law, were booked at the Belmont County jail around 9 p.m. Wednesday.

The three men voluntarily turned themselves in for "anticipatory processing," Sheriff Fred Thompson said. Thompson said they have not been charged with any crime, but the chiefs said they were preparing to be indicted.

Thompson said it may seem like backward logic, but for the men accused, it was forward thinking. By being processed at the jail before being charged, the men avoided media attention. Further, the case remains sealed pending their arraignment.

"(They) get the processing taken care of without any of the hoopla or paparazzi," Thompson said.

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The men are expected to be served with their charges Thursday or Friday before a scheduled arraignment Belmont County Court at 8:15 a.m. Friday., Thompson said.

On Wednesday, Hervey, who was acting as a special prosecutor for Belmont County, presented a case to a grand jury involving an incident related to the surrogate mother for Parker and Broderick. The surrogate gave birth to twins in Martins Ferry in June.

Carpenter confirmed for NEWS9 several weeks ago that he was under investigation in connection with the case and has maintained his innocence. He is still on the job but Martins Ferry Mayor Phil Wallace said he gave the chief the day off on Thursday.

Thursday, NEWS9 learned that the Bridgeport mayor told Dojack also not to report to work Thursday while the case is reviewed. The mayor and Dojack are related by marriage.

Some local residents said they were shocked to learn about the allegations against the public officials.

"I think they should remain (on the job) until they are proven guilty, if they are," said Chester Snezek, of Martins Ferry.

Others said they felt arrests were coming since the investigation began. They said what's more surprising is that the surrogate mother for the celebrities' twins gave birth here in the first place.

The NEWS9 Tonight team broke this story at 11 p.m. on Wednesday and have been following new details ever since. Stay with NEWS9 and WTOV9.com as we uncover new details.