Transcript for Police Frustrated in Baby Sky's Disappearance
Search for baby -- police in Washington State are becoming increasingly frustrated. With the investigation into the disappearance of this toddler they have very few leads and they're losing hope so what now. Here's ABC's -- Clough there. From high above. On horseback and on foot searchers are desperately expanding their efforts to this 640. Acre park. To find this two year old boy from Redmond Washington. So hard pressed for clues but police are doubling back on their earlier work. Can expand a little bit retrace her steps double checked everything -- It's been one week since sky -- -- was reported missing by his mother and without any significant -- Police are growing doubtful they'll find the boy alive. Every hour that passes. This case becomes more and more disappointing for us that we haven't found something to lead to his discovery yet. A police spokesperson going so far -- to say there is a real possibility. Sky is no longer -- line. Police scoured the park because it's near the apartment complex were sky lived with his mother Julia -- -- -- -- a first reported the boy's disappearance last Sunday she told police she left -- alone in her -- abandoned car. Saying she had run out of gas and had walked to a nearby gas station for help but as police would later revealed her story was questionable. As you saw the vehicle operated. -- but after that initial report critical but stopped talking to police even refusing to take a lie detector test. Police have not dangerous suspect in the case but have grown frustrated by her lack of cooperation. Meantime the boy's father Solomon met a wallet handed out flyers trying to recruit more people to help him search for his son. They added but he was very wanted to help -- -- to get a love that's as much as they can for Good Morning America -- Cutler ABC news. Chelsea the frustration and has fathers -- has voice.
This transcript has been automatically generated and may not be 100% accurate.