DUBUQUE, Iowa (AP) — Authorities have arrested two more people in connection with an April home invasion and killing of a northeast Iowa man.

U.S. Marshals arrested 30-year-old Eric D. Campbell in the Chicago area on Tuesday on first-degree murder and first-degree robbery charges. Calumet, Illinois police arrested 30-year-old Savanna R. Stotlar on a warrant for second-degree robbery.

Both were charged in connection with the robbery and shooting death of 21-year-old Collin A. Brown of Key West. Thus far, eight people have been arrested on charges that authorities say are connected to Brown's death.

Court records say three people broke into a trailer that brown shared with a woman and demanded drugs and cash. Authorities say Brown fled from the trailer and was shot.

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