Guelph Police Service say they have found no credible evidence in their investigation into several online threats that were made towards area schools.
Investigators say they were informed on Wednesday by a number of residents of messages that were being circulated on social media.
They have concluded that a photo of firearms that was attached to the post was a stock photo and that there were no indications that the firearms in the photo came from anyone locally.
A further investigation revealed that a youth was behind the posts and was spoken to by police who determined that the youth does not pose any risk to public safety.
The Upper Grand District School Board released a statement saying they are taking each incident seriously and are working with local authorities.
They say they believe the alleged threats are similar to those that were made toward schools in the greater Toronto area.
The school board says police youth officers will be making increased visits to local high schools on Thursday but added there are no plans to significantly increase police presence in the schools.
Guelph police say the investigation remains ongoing.