ANCHORAGE (AP) -- An Anchorage man charged with killing his 2-month-old daughter, was jobless and staying at home caring for four children while their mother was having an affair with a jail inmate and leaving the family's trailer home for periods of time, according to charging documents.
Sean Duncan, 29, has been charged with second-degree murder and first-degree assault. Police say he fractured the skull of Gabrielle Duncan, causing her death on Sept. 17, and fractured the skull of her twin sister, Corrine, who survived.
Both twins also suffered numerous other fractures, but a prosecutor said it is not known who inflicted them.
Duncan was arraigned at the Anchorage Jail on Thursday afternoon. He is being held on $500,000 bail.
Corrine Duncan and the two other children, girls ages 7 and 2, have been placed in a foster home by the state Division of Family and Youth Services. Duncan is the father of the twins but not the others.
DFYS was alerted about the twins when their mother, 24-year-old Nicole Domme, gave birth in July a month early, prosecutor Mary Anne Henry said. The concern might simply have been that Domme was single and young with premature babies.
The agency arranged for in-home help for Domme, but there was no evidence of abuse at that time, Henry said. The injuries were found by X-ray after Gabrielle's death.
''They did what they could do,'' Henry said. ''There is no way they could see taking those kids.''
Domme said in a telephone interview Thursday evening that she saw her children every day, even when she spent the night away, and is shattered by what happened.
''I am a grieving mom who has to bury her child because I left my child with someone I should have been able to trust,'' Domme told the Anchorage Daily News.
She gave up the first of her five children to DFYS years ago when she was 15 and in foster care, she said.
Police and prosecutors believe Gabrielle's skull fracture occurred just hours before her death.
The babies' heads may have been banged together, the complaint said.
''We think that he, in a moment of frustration and maybe anger at her, did this,'' Henry said.
The complaint describes a home where Duncan, jobless, seethed when Domme left him low on diapers and with no money to buy food.
According to what Domme told police, she stopped by the house Sept. 17 to take food to the children. She hadn't been there for most of two days, the complaint said.
She spoke on the phone with her new boyfriend, Danny Cox, telling him within earshot of Duncan that she loved him. She then left with Cox's mother. Later that afternoon she visited Cox, who is 19 and in jail on a robbery charge.
She returned home around 8:30 p.m., found Gabrielle gray in her crib and called 911. Police and paramedics found Gabrielle on the living room floor ''ashen white in color, her lips were dark blue and she was warm to the touch,'' the complaint says.
Medics told police officers on the scene that they believed the baby's death was suspicious.
According to the papers, Duncan was alone with the four children most of the day. He denied hurting the babies and said neither had taken a fall, Detective David Parker wrote in the complaint.
The papers allege that Domme, who worked at a strip club, wanted Duncan to get a job and help support their family. Domme said she's a bartender at the Crazy Horse.
Asked how he felt about being left home alone with the four children, Duncan answered, according to the complaint, that ''he was lucky to get three hours of sleep a night. He said that he was basically doing all the work around the house and child care.''
Duncan has a 1994 assault conviction, which was later set aside, and a 1994 retail theft conviction from Illinois, both misdemeanors.
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