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Update 11/25: The Fort Worth Fire Department says O'Neill has been given permission to return to duty. He was assigned to an administrative position in the department while the investigation was open.

The Garland County District Attorney's Office in Arkansas formally says it's passed a motion not to prosecute O'Neill on the second degree murder charge.

Original report below:

FORT WORTH A second degree murder charge against a Fort Worth firefighter filed in Arkansas has been dropped.

Shea O'Neill, 40, was accused of stabbing to death a 23-year-old man after a confrontation inside a car earlier this month. Two other people inside the car gave stories that conflicted with O'Neill's account.

O'Neill had claimed he pulled a knife in self defense after two men tried to rob him.

The Garland County, Arkansas district attorney said it does now appear to be self defense, and that the fire fighter was being robbed. O'Neill remains on the Fort Worth Fire Department with his status unchanged, according to a department spokesman.

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