CHARLOTTE,N.C., SEPT. 16 -- Jessica Hahn will testify Monday before a grand jury investigating PTL's operations under founder Jim Bakker, her attorney said today.

"We'll be in Charlotte Monday at 9:30 a.m. to testify," attorney Dominic Barbara said in a telephone interview. "She'll enter through the front door."

Barbara said his client would probably meet with reporters first. "I'm sure she'll have something to say," he said.

Hahn, 28, is expected to testify under limited immunity about the money she received after her 1980 sexual encounter with the former TV evangelist.

Meanwhile, federal prosecutors were tight-lipped today about next week's grand jury testimony.

"I'm not free to comment," said Justice Department investigator Charles Alexander, who is directing the grand jury probe with Assistant U.S. Attorney Jerry Miller. Miller did not return phone calls today.

Bakker resigned as head of the PTL television ministry in March, saying he had been blackmailed after he and the former church secretary from Long Island had a tryst in a Florida hotel.

California minister John Stewart, businessman Paul Roper and Kansas contractor Roe Messner also have been subpoenaed to appear next week before the grand jury. They are expected to testify about their knowledge of the financial settlement between Hahn and Bakker.

Hahn has said she agreed to accept $265,000 in exchange for her silence about the incident but received only a small amount of the money before Bakker resigned and payments were cut off. Last month Barbara said Hahn would be testifying as a government witness.

Though federal prosecutors won't comment, a subpoena of PTL documents shows the investigation will focus on the lavish life styles of Bakker, his wife Tammy Faye and their close aides.

A government source said in June that federal officials opened the investigation and called for a grand jury because of many allegations about PTL under Bakker and questions about the ministry's tax-exempt status.