Police reportedly find 'items of interest' in search for missing Sky Metalwala

(CBS/KIRO) REDMOND, Wash. - Police searching for missing Washington toddler Sky Metalwala say they found several "items of interest" while combing a Kirkland park over the weekend.

Pictures: Missing toddler Sky Metalwala

Police said Monday the evidence could be related to the two-year-old's disappearance and has been sent to a forensic lab for analysis, Fox News reports.

Police were led to Watershed Park by a tip they received late in the week, reports CBS affiliate KIRO. Despite over 1,000 tips reportedly received in the search for Sky, there have so far been no major breaks in the case.

Julia Biryukova told police her two-year-old son vanished Sunday in Bellevue, Wash. when she left him sleeping alone in her unlocked car after it ran out of gas. She said she and her four-year-old daughter went to get gas and when they returned an hour later, the boy was gone.

Police said the car started and ran fine when they took it for a test drive. Investigators said they have been frustrated that Biryukova has not answered questions about discrepancies in her story. She has not agreed to a polygraph test, saying through her lawyer that she is too distraught to answer questions.

Sky's disappearance came amid a bitter divorce and custody fight between Biryukova and the boy's father, Solomon Metalwala.

Solomon Metalwala and his lawyer, Clay Terry, said they want to establish a fund this week to offer a reward for information about the boy, KIRO reports.

"We hope that maybe we can raise enough money that somebody who knows something might be convinced that maybe it's a good time to move forward.

Complete coverage of Sky Metalwala on Crimesider