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KUSA - A woman accused of suffocating her 7-month-old son and throwing his body in the garbage in the spring of 2012 entered a not guilty plea Monday morning in Adams County Court.

Sharrieckia Page, 23, faces charges of first-degree murder and child abuse resulting in death.

The Commerce City Police Department investigated a missing-person incident involving Page's son on March 29, 2012.

Sources confirmed to 9NEWS the baby was thrown in a Dumpster.

"Over a 53-day period, 500 people from 26 agencies and community organizations across the state and nation participated in the search," Commerce City Police said.

LaShannon Younger of Peoria, Ill., Page's cousin, said she was worried about the baby after she talked with Page on the phone.

Younger says Page told her she was having a hard time raising the child. She says her cousin kept saying that she gave the baby away and that he was never coming back.

Read the affidavit