SPARTA - A Sparta man was arrested after police discovered radioactive materials in his home while investigating a 911 hang up call.

Police say officers arrived at the home and found Joseph Gibeau in a verbal dispute with his wife. While police were trying to calm the situation, an officer noticed three small metallic casks painted yellow and marked as “Radioactive Material” on a bookshelf.

The Picatinny Arsenal Fire Department was called to the scene and members determined that two of the three metallic casks were radioactive and contained Uranium 235 and Americium 241, according to Sparta police.

The items were taken by the New Jersey Department of Environmental Protection Agency to the State Laboratory in Bayonne for additional testing and confirmation. 

Police say Gibeau was charged with one count of possession of stolen property and two counts of child endangerment. A 6-year-old child was home at the time of the incident.