One man is in custody and Volusia County authorities are investigating a cache of ordnance, according to a release from the Volusia County Sheriff's Office.
Investigators say a domestic disturbance that started Sunday afternoon in a DeBary home led to the discovery of what they call an array of potentially explosive devices and substances.
As a result of the discovery, investigators say a bomb squad and other units were on scene from Sunday night into Monday morning.
Investigators say teams stayed on scene more than 13 hours after the initial disturbance call at the residence led responding deputies to find a grenade in the back yard.
According to the Sheriff's Office, deputies arrived in response to an argument between a 31-year-old Christopher S. Langer and his parents.
Investigators say during the argument, a reportedly intoxicated Langer told his parents he had put an explosive substance inside a grenade.
Deputies say Langer initially denied the grenade existed when a responding deputy asked him about it.
The Sheriff's Office report indicates Langer acknowledged he had thrown the device outside, and he offered to show the deputy where it was.
Upon searching the area, the deputy reported finding a metal pineapple-style grenade with a paper clip in place to hold the lever and keep it from exploding.
Deputies say they evacuated the house and began their investigation.
Authorities say a search warrant resulted in the discovery of an estimated 200 containers inside the house containing unknown powders, acids and other materials.
Officials say a bomb robot used to examine a hole in the back yard discovered a small explosive device, and a second possible explosive device was found in a lunchbox.
Langer has been charged with making / possessing a destructive device.
Officials say additional charges are possible.