Screenshot via KTVI.

Screenshot via KTVI.

An off-duty St. Charles County (Mo.) Sheriff's deputy shot three men who attempted to rob him while he jogged late Monday night at Forest Park's Grand Basin.

The men approached the deputy, 36, and a female friend, 23. One of the men raised a pistol and said, "Don't make me kill you," reports the St. Louis Post-Dispatch.

The deputy announced he was a police officer and opened fire, killing Antonio Nash and wounding Jordan Hunter and Jamaal Robinson. On Tuesday, Hunter and Robinson, both 20, were charged with second-degree murder in the death of Nash, 18.

St. Charles County Sheriff Tom Neer said the shooting appears to be justified and credited the deputy as competent and well-trained. The deputy is assigned to a federal task force.