A Davenport man is accused of trapping a woman inside his home, sexually assaulting her, attempting to strangle her and breaking at least one of her ribs.

He faces charges that could put him in prison for the rest of his life.

Assistant Scott County Attorney Patrick McElyea filed a first-degree kidnapping charge against 41-year-old James Harley Schildberg.

Schildberg already was in the Scott County Jail on lesser domestic assault charges related to the Dec. 26 incident at his home at 5112 N. Fairmount St., Lot 263.

The penalty in Iowa for first-degree kidnapping is life in prison. McElyea also charged Schildberg with second-degree sexual abuse, a Class B felony, and domestic abuse with strangulation, an aggravated misdemeanor.

A Class B felony is punishable by up to 25 years in prison.

Scott County Attorney Mike Walton confirmed Friday that the new charges are connected to the same Dec. 26 incident in which Schildberg previously was charged with domestic assault causing bodily injury and false imprisonment.

Schildberg was booked into the Scott County Jail at 8:32 p.m. Dec. 26 on the lesser charges. Walton said those charges were dropped after the new charges were filed. As of Friday, Schildberg still was in the jail on a $100,000 cash-only bond.

Walton said the more serious charges were based on further investigation and consultation with the victim.

According to records, the victim is 44 years old.

To be charged with first-degree kidnapping, a suspect is accused of confining another person and causing serious injury or committing a sexual abuse, according to Iowa code. The second-degree sexual abuse charge claims he committed sexual abuse and used or threatened to use force creating a substantial risk of death or serious injury to another person, the code states.

According to his arrest affidavit, Schildberg assaulted the victim by grabbing the back of her head and pulling out her hair, slamming her head into objects, punching her in the face and ribs and attempting to strangle her with his legs to the point where she could not breathe.

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He took the victim’s cellphone and trapped her inside the back bedroom of his home beginning at 1:30 a.m. Dec. 26 and would not allow her to leave, the affidavit states.

It is unclear in the affidavit how long the victim was confined or how she eventually got free. When police later found her, she had visible injuries to her face, head, neck, arms, back and legs, the affidavit states.

The victim was held for a little over 14 hours and was able to get out when Schildberg fell asleep, Davenport Police Capt. Dale Sievert said.

The victim requested an emergency order of protection immediately following the incident. A new protective order was issued Wednesday.

Schildberg also is being held on a parole violation for an operating while intoxicated, third offense, out of Muscatine County.