WATERVILLE (AP) — Divers from the Maine State Police and Warden Service completed their latest search in the Kennebec River on Tuesday for signs of missing toddler Ayla Reynolds, but officials said they found “nothing substantial.”

The search, which began Tuesday morning and wound down in midafternoon, took place between two dams crossing the river between Waterville and Winslow in central Maine. Police with nine dogs also searched the banks of the river where the water had been lowered, spokesman Steve McCausland of the state Public Safety Department said after the search.

McCausland said Tuesday’s activities had been planned for three weeks, and the timing, which marks seven months from the day that Ayla was reported missing, was coincidental. Ayla was 20 months old when she was reported missing by her father, Justin DiPietro of Waterville, who had been caring for her.