MANITOWOC -- A man accused of killing a young freelance photographer was charged Wednesday with kidnapping and raping her.
Steven Avery, 43, was originally charged with being party to first-degree intentional homicide, being party to mutilating a corpse and possessing a firearm by a felon in the slaying of Teresa Halbach on Oct. 31.
Additional charges filed Wednesday accuse Avery of being party to first-degree sexual assault, kidnapping and false imprisonment of Halbach, according to the criminal complaint filed in Manitowoc County Circuit Court. The maximum punishment for the new charges are 106 years in prison.
Avery's nephew, Brendan Dassey, 16, was charged last week in the case after investigators say he gave a detailed account of what happened to Halbach.
Dassey said he went to Avery's home to deliver a letter to his uncle, and Avery told him he had sexually assaulted Halbach, according to a criminal complaint.
Dassey said he raped the 25-year-old woman as she begged for help while tied to a bed, and then he and Avery stabbed her, Avery strangled and shot her, and the two of them threw her in a burn pit, according to the complaint.
The teen was charged with being party to first-degree intentional homicide, first-degree sexual assault and mutilation of a corpse.
Last week, special prosecutor Ken Kratz said he would file more charges against Avery based on Dassey's statement to police.
Avery was released from prison in 2003 after serving 18 years for a rape in Manitowoc County that he didn't commit. DNA testing exonerated him, proving another man committed the crime.
Avery has denied any knowledge of Halbach's death.
In another development Wednesday, Kratz filed a motion asking a judge to increase Avery's bail from $500,000 cash to $2 million cash.
"New information has come to the attention of the state, as this investigation has proceeded, to require the court to consider denial of bond," Kratz wrote. "The character and strength of the state's case has increased since the last time bail was considered, including the addition of an eyewitness."