Updated

Prosecutors say a Virginia police officer was justified in fatally shooting a man armed with a BB gun that looked like a handgun.

Media outlets report Suffolk Commonwealth's Attorney C. Phillips Ferguson released a report Thursday, saying an investigation showed Officer James Babor's use of deadly force against 28-year-old Corey Achstein was reasonable.

Babor and Officer Cheryl Abrigo encountered Achstein on Dec. 28 after responding to reports of a man chasing three juveniles and threatening them with a gun.

Ferguson says Babor warned Achstein six times to comply before firing. Ferguson says Achstein reached for his waist, twisting toward Abrigo and Babor, who thought Achstein was reaching for a weapon. Babor shot Achstein in the back.