Feds recover weapons and gear from Rhode Island arena shooter's home and storage unit
Federal agents seized a sawed-off shotgun, an AR-15‑style rifle and ammunition from Robert Dorgan’s Rhode Island home and a Maine storage unit, along with documents and gear, as investigators study the Pawtucket arena rampage that left his ex-wife and son dead before he killed himself; items found at the storage facility were sent to a Rhode Island crime lab.