Police boat

Part of the search effort included a dive team and helicopter from the OPP. Reiner was reported missing on Dec. 26 around 4:40 p.m. and has not been found since. (Amanda Grant/CBC)

Waterloo Regional Police say emergency service workers have ended their formal search of the Nith River for five-year-old Robbie Reiner of New Hamburg. 

The child was reported missing on Dec. 26.

Rescue workers had found footprints leading to a hole in the ice by the river's edge in New Hamburg, with no footprints heading back. It's believed the boy fell into the river.

Over the past five days, Waterloo Regional Police along with the Kitchener, Wilmot and Cambridge fire departments and the Ontario Provincial Police searched for him. A team of police divers searched the waters of the Nith starting on Friday and on Monday, an OPP helicopter surveyed the waterway in search of new clues.

Police said Monday that they had exhausted all remaining search options.

WRPS Staff Sgt. Shaena Morris said weather was one of the main deciding factors to end the search. 

"The ice, the current of the water and as well the observers in the helicopter were able to see that there was significant debris in the water as a result of the ice storm," said Morris. "That's also created some difficult situations for searching."

Although the formal search on the Nith is over, Morris says police are still investigating how the boy went missing.