GLADSTONE, Ore. -- Police want to question the father of an infant found dead in a Clackamas park earlier this month.

Police said they believe Dylan Michael Nelson, 20, left the baby, named Rowdy, in the woods after he died. They are seeking help from the public to find Nelson, (pictured above) although he has not been named as a suspect in the infant's death.

Investigators found the baby's body on December 10 after his mother reported that her five-month-old son had been murdered at a Gladstone motel and then taken to the woods, police said.

Members of the Clackamas County Search and Rescue team discovered the baby's frozen body near the stump of a tree off of a trail in Milo McIver Park located in the 24100 block of South Entrance Road in Estacada, said officer Eric Graves with the Gladstone Police Department.

Investigators believe Rowdy died at the Budget Inn on Southeast McLoughlin Boulevard and was taken to the park by his parents on Saturday, December 7, 2013, between 11:15 a.m. and 2 p.m. in a blue 1989 Chevrolet Blazer with an Oregon license plate, Graves said.

The vehicle had a broken passenger window and has since been found, but Nelson remains at large.

Police want anyone who saw the Blazer or Nelson around the time of the baby's disappearance to contact them with details.

Investigators believe that Nelson and Rowdy's mother drove to the Roadway Inn, located in the 3300 block of Astoria Way, in Salem, after leaving the park. The mother continues to cooperate with police and has not been charged in Rowdy's death.

Background: Baby found dead in Clackamas park

Police have not yet said exactly how they believe Rowdy died, or if any charges will be filed, only that his death was suspicious.

Anyone with information that may help police was asked to call detective Kevin Voss at (503) 557-2762.

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