Investigators announced that a campground search in Idaho Monday revealed new information and evidence into the disappearance of a 2-year-old boy last summer, but they would not reveal exactly what they uncovered.

DeOrr Kunz Jr. was last seen on July 10 at his family's campsite at Timber Creek Campground, just south of the town of Leadore near the Montana border. Despite numerous searches, no trace of Kunz has been found.

"Evidence and information gathered during the course of the search will be analyzed and used to drive the investigation forward and assist in the planning of future searches," Chief Deputy Steve Penner told EastIdahoNews.com.

He said the new search lasted three days. The sheriff's office reportedly closed off the campsite last month.

Police said in January they named the boy's parents as suspects, but no charges have been filed. Lemhi County Sheriff Lynn Bowerman said the parents, Jessica Mitchell and DeOrr Kunz Sr., were "less than truthful." 

Bowerman said he believed the parents knew the child's location and whether he was dead or alive.

The Associated Press contributed to this report.