Updated Wednesday, May 31: St. Helens police said a family friend found River Casino Elder with his 17-year-old brother Wednesday morning.

The teens were at an empty house in Rainier, police said in a Facebook post. The friend took the teens to the Columbia County Courthouse.

The court will figure out the teens' custody status, police said.

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St. Helens police are searching for a missing teen whose father is suspected of withholding information from officers, according to media reports.

River Casino Elder's maternal grandmother reported him as a runaway last Wednesday, the St. Helens Chronicle reports. The teen was recently removed from his father's custody and placed in his grandmother's custody, according to the newspaper.

The Chronicle reports Marvin Elder, 45, was arrested Saturday on suspicion of interfering with a police officer. Elder's girlfriend, 34-year-old Tiffany Kelly, was also arrested on suspicion of the same charge.

Police think Marvin Elder is withholding information and working against the custody order, according to the Chronicle.

The couple was booked into the Columbia County Jail, the newspaper reported. Neither the man nor his girlfriend were listed on the jail's roster Tuesday night.

Police said in a Facebook post that the boy, 13, may have a small, white dog with him and may be in the Rainier or Clatskanie areas, police said.

KPTV reports the teen was last seen near Americas Best Value Inn St. Helens.

Police ask anyone who knows his whereabouts to call 503-397-1521.

— The Oregonian/OregonLive