The devastated family of an unarmed teenage boy who was shot dead by a Michigan sheriff's deputy earlier this year after flashing his car lights at him has filed a lawsuit against the officer.

Deven Guilford, 17, was pulled over by Sgt. Jonathan Frost, of Eaton County Sheriff's Department, on a cold evening in February after flashing the officer because he believed his brights were on.
During the traffic stop, Guilford refused to put his hands behind his back or give Frost any official documents, leading to an altercation between them, according to county prosecutor Doug Lloyd.
This ended with Guilford lying dead in a snow-filled ditch, having been shot seven times by Frost.
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Deven Guilford (pictured), 17, was shot dead by Sgt. Jonathan Frost, of Eaton County Sheriff's Department in Michigan
Deven (pictured had flashed the officer because he believed his brights were on
'Tragic death': Deven Guilford (left and right), 17, was shot dead by Sgt. Jonathan Frost, of Eaton County Sheriff's Department in Michigan, after flashing the officer because he believed his brights were on

Traffic stop: This bodycam footage shows Frost pointing his stun gun at Deven on the night of the shooting
Now, the teenager's grief-stricken relatives are taking legal action against the officer and the county - four months after Lloyd cleared Frost of any criminal wrongdoing in the February 28 shooting.
In their suit, filed in federal court on Wednesday, the family members claim Frost's 'entire course of action' in the fatal incident was illegal' - and that it was 'in violation of Deven's constitutional rights'.
'As we take this action today we are outraged at the huge miscarriage of justice done to our son Deven Guilford,' the boy's parents, Brian and Becky Guilford, said in a statement on Wednesday.