Updated

A Louisiana law enforcement officer has been sentenced to 40 years in prison a week after being convicted of manslaughter in the shooting death of a 6-year-old boy with autism.

Derrick Stafford was sentenced Friday.

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Stafford was convicted in the November 2015 shooting that killed Jeremy Mardis and critically wounded his father after a 2-mile car chase in Marksville.

A spokeswoman for Attorney General Jeff Landry says Stafford was sentenced to 40 years for manslaughter and 15 years for attempted manslaughter. He will serve the sentences concurrently.

Video from a police officer's body camera shows the boy's father, Christopher Few, had his hands raised inside his vehicle while Stafford and a second deputy city marshal collectively fired 18 shots at the vehicle.