The father of one of two missing Iowa cousins is being eyed as a suspect in their disappearance, a family member told reporters today.

Tammy Brousseau -- the aunt of missing Lyric Cook-Morrissey, 10, and Elizabeth Collins, 8 -- told ABC News that cops are accusing Cook's father, Daniel Morrissey, of being directly involved in the girls' disappearance last Friday.

"[Police] have accused him," Brousseau told the station. "They told him they had proof that he did it."

What proof Brousseau speaks of is unclear. Police are still looking for clues in the case, while Morrissey and his estranged wife Misty -- the parents of Lyric Cook-Morrissey -- fend off police and media scrutiny.

The couple has a long criminal history. Misty was linked to a methamphetamine ring in 2003, and Daniel has had several drug possession and burglary charges since the early 1990s, the Des Moines Register reported.

Since Wednesday, the Morrisseys' phones and computers have been confiscated for evidence, though neither have been charged with any crime in the case.

CASE PHOTOS (story continues below):

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  • Lyric Cook-Morrisey Elizabeth Collins

    Lyric Cook-Morrisey (left) and her cousin, Elizabeth Collins, have been missing since July 13.

  • Lyric Cook-Morrisey And Elizabeth Collins

    Lyric Cook-Morrisey (left) and her cousin, Elizabeth Collins, were last seen July 13, when they left their grandmother's Evansdale, Iowa home and went on a bike ride. The girl's bikes and one of their purses were later found along a nature trail that runs along Meyers Lake.

  • Misty and Dan Morrissey speak to the media near Meyers Lake where their daughter Lyric Cook-Morrissey, 10, and Elizabeth Collins, 8, disappeared last Friday, Tuesday, July 17, 2012, in Evansdale, Iowa. The girls' bikes were found Friday afternoon near a bike trail at the edge of the lake. (AP Photo/Charlie Neibergall)

  • Elizabeth Collins

    Eight-year-old Elizabeth Collins.

  • Lyric Cook-Morrisey

    Ten-year-old Lyric Cook-Morrisey

  • Dan Morrissey leans on a tree near Meyers Lake where his daughter Lyric Cook-Morrissey, 10, and Elizabeth Collins, 8, disappeared last Friday, Tuesday, July 17, 2012, in Evansdale, Iowa. The girls' bikes were found Friday afternoon near a bike trail at the edge of the lake. (AP Photo/Charlie Neibergall)

  • Elizabeth Collins And Lyric Cook-Morrisey

    Elizabeth is described as a white female, 4'1" tall, 65 lbs., with sandy hair and blue eyes. Lyric is also a white female, 4'11" tall, 145 lbs. with brown hair and blue eyes. Anyone with information on the girl's whereabouts is asked to call the Tip Line at (319) 232-8862. According to the Waterloo Courier, a reward for the safe return of the children is available.

  • Black Hawk County chief deputy Captain Rick Abben speaks during a news conference about the investigation of missing children Lyric Cook-Morrissey, 10, and Elizabeth Collins, 8, who disappeared last Friday at Meyers Lake, Tuesday, July 17, 2012, in Evansdale, Iowa. The girls' bikes were found Friday afternoon near a bike trail at the edge of the lake. (AP Photo/Charlie Neibergall)

  • Law enforcement authorities collect possible evidence near Meyers Lake where Lyric Cook-Morrissey, 10, and Elizabeth Collins, 8, disappeared last Friday, Tuesday, July 17, 2012, in Evansdale, Iowa. The girls' bikes were found Friday afternoon near a bike trail at the edge of the lake. (AP Photo/Charlie Neibergall)

  • Law enforcement authorities collect possible evidence near Meyers Lake where Lyric Cook-Morrissey, 10, and Elizabeth Collins, 8, disappeared last Friday, Tuesday, July 17, 2012, in Evansdale, Iowa. The girls' bikes were found Friday afternoon near a bike trail at the edge of the lake. (AP Photo/Charlie Neibergall)

  • Misty and Dan Morrissey walk to speak to the media near Meyers Lake where their daughter Lyric Cook-Morrissey, 10, and Elizabeth Collins, 8, disappeared last Friday, Tuesday, July 17, 2012, in Evansdale, Iowa. The girls' bikes were found Friday afternoon near a bike trail at the edge of the lake. (AP Photo/Charlie Neibergall)

  • Law enforcement authorities look for possible evidence at Meyers Lake where Lyric Cook-Morrissey, 10, and Elizabeth Collins, 8, disappeared last Friday, Tuesday, July 17, 2012, in Evansdale, Iowa. The girls' bikes were found Friday afternoon near a bike trail at the edge of the lake. (AP Photo/Charlie Neibergall)

  • Law enforcement authorities in kayaks search Meyers Lake where Lyric Cook-Morrissey, 10, and Elizabeth Collins, 8, disappeared last Friday, Tuesday, July 17, 2012, in Evansdale, Iowa. The girls' bikes were found Friday afternoon near a bike trail at the edge of the lake. (AP Photo/Charlie Neibergall)

  • Local residents sit on a park bench near Meyers Lake where Lyric Cook-Morrissey, 10, and Elizabeth Collins, 8, disappeared last Friday, on Tuesday, July 17, 2012, in Evansdale, Iowa. The girls' bikes were found Friday afternoon near a bike trail at the edge of the lake. (AP Photo/Charlie Neibergall)

  • Sarah Staebell ties pink ribbons for Lyric Cook- Morrisse, 10, and Elizabeth Collins,8, missing from Evansdale since last Friday, on light poles along Lafayette Street in Evandale Monday, July 16, 2012. The two girls have been missing since leaving their grandmotherĀ's house Friday afternoon in Evansdale. Their bikes were found Friday afternoon near a bike trail at the edge of Meyers Lake in Evansdale. (AP Photo/Waterloo Courier, Brandon Pollock)

  • An off-duty Cedar Rapids police officer searches the underbrush for clues to the disappearance of Lyric Cook-Morrissey and Elizabeth Collins along the bike trail around Meyers Lake in Evansdale Monday, July 16, 2012. The two girls have been missing since leaving their grandmotherĀ's house Friday afternoon in Evansdale. Their bikes were found Friday afternoon near a bike trail at the edge of Meyers Lake in Evansdale. (AP Photo/Waterloo Courier, Brandon Pollock)

  • This undated photo provided by Black Hawk County police shows 10-year-old Lyric Cook-Morrissey who, along with her 8-year-old cousin Elizabeth Collins, has been missing since Friday afternoon, July 13, 2012. The girls were last scene Friday afternoon leaving their grandmother's house. (AP Photo/Black Hawk County Police via Waterloo Courier)

  • Elizabeth Collins

    This undated photo provided by Black Hawk County police shows 8-year-old Elizabeth Collins, who, along with her10-year-old cousin Lyric Cook-Morrissey, has been missing since Friday afternoon, July 13, 2012. The girls were last seen Friday afternoon leaving their grandmother's house. (AP Photo/Black Hawk County Police via Waterloo Courier)

Lyric Cook-Morrissey and Elizabeth Collins went on a bike ride from their grandmother's house in Evansdale on Friday and haven't been seen since. Authorities have put all their resources into the search, and are currently draining the 27-acre Meters Lake in the city as they search for evidence.

Heather Collins, Elizabeth's mother, has said she believes the girls were kidnapped.

"I want to say to [the person responsible] that my husband and I have forgiven them," she told ABC's 'Good Morning America.' "God has forgiven them already. So we have forgiven them, and we just want our children back safe and sound. That's all we want. We don't even want to know who the person is."

Elizabeth is described as a white female, 4'1" tall, 65 lbs., with sandy hair and blue eyes. Lyric is white, 4'11", 145 lbs. with brown hair and blue eyes. Anyone with information on the girls' whereabouts is asked to call the Tip Line at (319) 232-6682.

CORRECTION: In an earlier version of this article, the Tip Line number for information about the girls' whereabouts was incorrect. It is (319) 232-6682.