JACKSON (AP) — A county supervisor in the Mississippi Delta thought he was meeting two prostitutes from SugarDaddyForMe.com when he pulled into the Shady Nook truck stop, but instead was arrested by the FBI, federal agents said in court documents.

Coahoma County Supervisor and Clarksdale cardiologist Dr. Roger Weiner was charged with the federal crime of soliciting prostitution across state lines Sunday and arraigned Monday.

A federal investigation began in December when Weiner’s former colleague gave FBI agent Justin Newsome the doctor’s ‘‘electronic communications’’ from a work computer the two shared, according to a seven-page affidavit filed Monday in federal court.

The agent began monitoring SugarDaddyForMe.com, which he described as an online chat room for wealthy ‘‘Sugardaddies’’ to meet ‘‘Sugarbabies’’ for ‘‘companionship and entertainment.’’ Newsome said in court documents he found Weiner’s ‘‘attempts to solicit sexual acts and companionship from female members in exchange for gifts and monetary payment.’’

The information was used to obtain a search warrant to view Weiner’s e-mails.

Weiner did not immediately respond to messages left Tuesday on his cell phone and at his office, the Weiner Heart and Cardiovascular Institute. Weiner’s lawyer, Kevin Hovan, said the allegations will be investigated. He declined further comment.

The affidavit describes the investigation in salacious detail, alleging that Weiner promised to pay women hundreds of dollars per sexual tryst.

An FBI agent posing as a prostitute began communication with Weiner on the Web site in January, according to the affidavit, under the screen name ‘‘wild—ginger.’’ Weiner gave the agent his e-mail address to set up a meeting.

At one point, the agent wrote that ‘‘you can expect to be treated like a king but this princess can only meet if she knows she is getting at least $500.’’

‘‘500 is no problem,’’ Weiner responded, according to the affidavit. ‘‘If you are truly ’wild’ and good looking your potential for spoiling is enormous.’’

Then on May 11, another undercover officer who began chatting with Weiner agreed to set up a ‘‘threesome’’ with Weiner and another supposed prostitute, court records state.

Authorities say Weiner called a few days later and offered to pay the women $400 each. But when Weiner pulled into the truck stop Sunday morning in his black BMW coupe, he was arrested. Authorities said he was carrying nearly $1,100 in cash.

He was arraigned in federal court in Greenville on Monday and released on $20,000 bond. A hearing is scheduled for Thursday in U.S. District Court in Greenville.

Weiner came to Mississippi from Philadelphia and opened his medical practice in the late 1990s, according to the clinic’s Web site. He was elected supervisor in 2007.

A federal investigation began in December when Weiner’s former colleague gave FBI agent Justin Newsome the doctor’s ‘‘electronic communications’’ from a work computer the two shared, according to a seven-page affidavit filed Monday in federal court.

The agent began monitoring SugarDaddyForMe.com, which he described as an online chat room for wealthy ‘‘Sugardaddies’’ to meet ‘‘Sugarbabies’’ for ‘‘companionship and entertainment.’’ Newsome said in court documents he found Weiner’s ‘‘attempts to solicit sexual acts and companionship from female members in exchange for gifts and monetary payment.’’

The information was used to obtain a search warrant to view Weiner’s e-mails.

Weiner did not immediately respond to messages left Tuesday on his cell phone and at his office, the Weiner Heart and Cardiovascular Institute. Weiner’s lawyer, Kevin Hovan, said the allegations will be investigated. He declined further comment.

The affidavit describes the investigation in salacious detail, alleging that Weiner promised to pay women hundreds of dollars per sexual tryst.

An FBI agent posing as a prostitute began communication with Weiner on the Web site in January, according to the affidavit, under the screen name ‘‘wild—ginger.’’ Weiner gave the agent his e-mail address to set up a meeting.

At one point, the agent wrote that ‘‘you can expect to be treated like a king but this princess can only meet if she knows she is getting at least $500.’’

‘‘500 is no problem,’’ Weiner responded, according to the affidavit. ‘‘If you are truly ’wild’ and good looking your potential for spoiling is enormous.’’

Then on May 11, another undercover officer who began chatting with Weiner agreed to set up a ‘‘threesome’’ with Weiner and another supposed prostitute, court records state.

Authorities say Weiner called a few days later and offered to pay the women $400 each. But when Weiner pulled into the truck stop Sunday morning in his black BMW coupe, he was arrested. Authorities said he was carrying nearly $1,100 in cash.

He was arraigned in federal court in Greenville on Monday and released on $20,000 bond. A hearing is scheduled for Thursday in U.S. District Court in Greenville.

Weiner came to Mississippi from Philadelphia and opened his medical practice in the late 1990s, according to the clinic’s Web site. He was elected supervisor in 2007.