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Sumter, SC (WLTX) - Sumter police have arrested two people in connection with a fatal shooting last Sunday morning.

Officers arrested 32-year-old Gary Dargan and 30-year-old Shonta Helton. Dargan is charged with murder, while Helton is charged with accessory before the fact of a murder.

Sunday morning, police say Dargan shot and killed 33-year-oldMario Carrbarus Scott on Dingle Street.

Investigators now believe that Helton and Scott got into an argument Saturday night. According to investigators, Helton called Dargan, who police say is her boyfriend.

Dargan, police say, then followed Scott and shot him.

Helton was arrested Monday night, and Dargan was arrested a day later.