According to TMZ:
Law enforcement sources tell us … the 23-year-old rapper was a passenger in a vehicle that was pulled over in the San Fernando Valley for running a stop sign early Wednesday morning.
During the stop, cops say they noticed that Soulja was in possession of a loaded gun — and arrested him on the stop.
Soulja was hauled to a nearby jail — he’s currently being booked.
SOURCE: TMZ | PHOTO SOURCE: Twitter