Prosecutors are expected to explain why they won't seek a third trial in the case of a Detroit police officer who fatally shot a 7-year-old girl during a chaotic raid in 2010.

Wayne County Prosecutor Kym Worthy announced Wednesday she was dropping the only remaining charge, a misdemeanor, against Joseph Weekley. A judge is holding a hearing Friday.

Weekley accidentally fired his gun, striking Aiyana Stanley-Jones in the head while she slept on a couch at her Detroit home. He says he was struggling with Aiyana's grandmother, although she has steadfastly denied it.

Weekley was charged with involuntary manslaughter. The first trial ended without a verdict in 2013. During a second trial, Judge Cynthia Gray Hathaway dismissed the felony after prosecutors presented their evidence.