TEMPE, AZ - Investigators say they have found additional Improvised Explosive Devices (IED's) in the home of a Tempe teen who was arrested on Tuesday .
Tempe Police investigators confirmed to ABC15 on Wednesday that additional bombs and bomb-making materials had been discovered in the home of Marcos de Niza student Joshua Prater.
Police Sgt. Mike Pooley confirmed Tupperware filled with gunpowder was also found in the teen's bedroom.
Of the additional IEDs, Pooley said two were smaller in nature and one was a larger device.
Detectives are testing the additional items to determine how they were made and what the components consist of.
According to court documents, the 18-year-old admitted to construction of at least one of the IEDs.
In the documents, detectives describe how one IED was manufactured out of an empty CO2 cartridge, hobby fuse and was filled with low explosive powder, match heads and fireworks.
A judge set bond at $10,000.