WATERVILLE, Maine — The father of a Maine missing toddler took a polygraph test shortly after she disappeared.

But neither Justin DiPietro nor police would say what the results were.

It’s been nearly four weeks since DiPietro reported his daughter, 20-month-old Ayla Reynolds, missing from his Waterville home.

DiPietro told the Morning Sentinel that he doesn’t know how he did on the polygraph test while police say they told him the results.

Stephen McCausland, spokesman for the Department of Public Safety, says he could not say what the results were.

Earlier this week, divers searched a half-mile stretch of an icy river in Waterville without finding any sign of the toddler. Authorities say they’re continuing to aggressively investigate the hundreds of leads that have poured in from across the country.