The investigation into the December shooting spree in Frankstown Township that left four people dead continues.
 
State police say they have confiscated guns, ammunition, knives and a stun gun from the home of the shooter, 44 year old Jeffrey Lee Michael, of 107 Lower Reese Road.
 
Michael allegedly believed end of the world was at hand when he shot and killed two neighbors and a woman along Juniata Valley Road on December 21. In the end, Michael was killed in a shootout with police.
 
State police say they have confiscated a Mossberg shotgun, a Carl Gustafs rifle, a Glock 23 pistol and a Marlin .22-caliber rifle, as well as the stun gun, four pocket knives and the ammo.
 
Authorities are focusing the investigation on finding out where and how the guns were purchased.