A serial killer who said two women in Cincinnati were among his more than 90 victims is scheduled to plead guilty Friday from a prison in California where he is serving multiple life sentences.

Samuel Little, now 79 years old, is expected to plead guilty to both Cincinnati killings via Skype internet video, officials announced. He will also be sentenced, although it is a formality, because of his California sentences.

Little has been linked to homicides in at least 16 states. The FBI says he may be among the country's most prolific serial killers. He has claimed 93 victims, about half of whom have been confirmed, officials said.

Investigators say he targeted vulnerable women and strangled them for sexual pleasure.

In one of the Cincinnati cases, the name of the victim is known, Anna Lee Stewart. She was strangled in October 1981. Little told investigators it was raining, so he drove her body to Grove City outside Columbus and dumped her in a wooded area near a small apartment complex.

In the second case, the victim's name is not known, and Little is expected to plead guilty to killing a “Jane Doe,” Hamilton County Prosecutor Joe Deters said. That can be done, Deters said, as long as there is no objection from Little’s attorneys.

Officials say the woman was killed between 1980 and 1999 and that her body may have been found within a 20-minute drive of Over-the-Rhine.

Authorities have allowed Little to sketch portraits of his victims and released dozens of the drawings to the media. He has made two of the "girl by highway," who officials say is the unidentified Cincinnati victim.

Common Pleas Judge Melba Marsh will oversee the videoconferencing of the plea hearing and sentence from the Hamilton County Courthouse library. Deters will be there, along with Franklin County Prosecutor Ron O’Brien. One of Little’s attorneys, Norm Aubin, will be there, as well.

Another of Little’s attorneys, Tim McKenna, and Chief Assistant Prosecutor Mark Piepmeier will be with Little at the California State Prison in Los Angeles County.

The arrangements were made because Little’s “health does not permit him to travel back to Ohio to face this felony indictment,” court documents say.

Little is the fifth serial killer Deters has prosecuted in his career.

Little was arrested in September 2012 at a Louisville homeless shelter and extradited to California, where he was wanted on a drug charge. DNA connected Little to victims in three unsolved Los Angeles homicides from 1987 and 1989. He was convicted and sentenced to three consecutive life sentences with no possibility of parole.

Earlier this year, Little wanted to move to a different prison, and in exchange for moving, he agreed to talk to investigators about unsolved cases. The FBI said he eventually created sketches of 26 of his victims, based on his memories of them.