An electrician who married the multimillionaire widow of a slain investment banker two years ago has been indicted in the man's death, a prosecutor said Monday.

Daniel Pelosi (search) became the focus of tabloid headlines — and a grand jury probe — after he married widow Generosa Ammon in January 2002. The couple later split and she has since died.

"An indictment has been filed by a special grand jury," Suffolk County District Attorney Thomas Spota told The Associated Press.

Spota said Pelosi's attorneys were instructed to have their client appear Tuesday morning at the district attorney's office. The precise charges against him would be unsealed until arraignment later in the day, Spota said.

"We'll be there and we're planning to plead an emphatic not guilty," said Gerald Shargell, one of Pelosi's defense lawyers.

Generosa Ammon (search) and her millionaire husband, Theodore Ammon (search), were just days away from finalizing a nasty divorce when he was killed in October 2001 in his sprawling Long Island (search) mansion.

An autopsy showed Ammon, a former general partner at the investment firm Kohlberg Kravis Roberts & Co., was smashed in the head with a blunt object. His estate was worth a reported $100 million.

Shortly after she married Pelosi, Generosa Ammon was diagnosed with cancer. When she died in August 2003 at age 46, she had already split with Pelosi after just over a year of marriage.

Both Pelosi, who has a record of drunken driving arrests and other skirmishes with law enforcement, and his lawyers have repeatedly proclaimed his innocence.

Pelosi received a reported $2 million post-nuptial payment, but nothing in her will. Pelosi's attorneys are challenging the validity of the will in court, and Ammon's sister is fighting for custody of her two children.

In court papers released last August, state Supreme Court Justice Robert Doyle said that a suspect in the killing owned a laptop computer that was used to access a security system in Ammon's mansion on the weekend of the death.

While Doyle did not name Pelosi, he wrote, "the individual who is a target of this investigation married the widow of the murder victim."