stolen GT Bicycles Aggressor 3.0

Nice apt complex edge of fond du lac. Was biking with my girlfriend's son around building, when he had to go to bathroom. We set bikes in grass (yeah, not locked I know, though we know/friends with many of the neighbors) and ran upstairs for 5min, came back down, bike gone, middle of day. This was a bike I built from just the bare frame I purchased from someone, and put about $200 in to building it.