In a new push to find missing 4-year-old Sky Metalwala, volunteers helped on Monday to prepare fliers that will be mailed to hundreds of Eastside doctors.

Photos sent by Sky's father's lawyer showed volunteers preparing the mailings to 360 physicians in the hopes that someone will come forward and say they treated the boy or his sister.

Any information could help police with some answers to the mystery of Sky's disappearance.

Julia Biryukova, Sky's mother, said she left the boy alone in her car on Nov. 6 in Bellevue when her car ran out of gas, but police tests show the car had plenty of gas and no mechanical problems.

Biryukova has refused to meet with police since her initial report to investigators.