Tuesday marks one year since the disappearance of Sky Metalwala.

Since his disappearance, Sky's father, Solomon, has made several pleas for help to find his son. He talked with KING 5's Joyce Taylor about the case, saying he has confidence that police are doing all they can.

I believe that they are doing their job to get this case locked down, Solomon said. We have continued contact with the police. I really believe [police] are doing exactly what they need to do to find where Sky is.

Solomon said he has not spoken to Sky's mother, Julia Biryukova, since their son was reported missing. Biryukova has not been cooperative with police, but has not been named a suspect. King County Prosecutor Dan Nelson said though there is suspicion, it's not enough to charge her with a crime.

Bellevue Police said Tuesday the investigation remains open and active. They added it's not uncommon for new information to move the case forward after a year or more.

Solomon still hopes one day he will see Sky.

I have chosen not to go into theories, but to believe that he is out there and one day we will see him, he said.

Timeline of search:

November 6, 2011 -- Julia Biryukova told police she ran out of gas in Bellevue, and left 2-year-old Sky in the car while she went to get help. She said when she returned he was gone.

November 8, 2011 -- Bellevue Police say they suspect foul play, but have no suspects.

November 9, 2011 -- Police search trash chutes at Biryukova's apartment and visit two garbage transfer stations.

November 11, 2011 -- Police test Biryukova's car and find no problems that would cause it to break down.

November 12, 2011 -- The search for Sky expands but nothing was found.

November 5, 2012 -- Solomon's attorney tells KING 5 News he believes Sky is dead. I think that Julia extinguished that child's life, Clay Terry said.

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