[Update: The lawsuit was filed Thursday morning. Head here for more.]

The family of Michael Brown plans to file a civil lawsuit against the city of Ferguson, Mo., for his death last summer.

Members of Brown’s family will announce the filing of a wrongful death lawsuit on Thursday at the St. Louis County courthouse, attorneys for the Brown family said Wednesday night.

Brown, an unarmed 18-year-old, was shot and killed by Darren Wilson, a white Ferguson police officer, last August. The shooting sparked heated protests over police actions in that city and beyond, becoming part of a national debate over the way law enforcement officers treat black men and boys.

A grand jury decided not to indict Wilson in November, while the Justice Department announced last month that it found evidence corroborating Wilson’s account and cleared him of any federal civil rights violations. 

The Justice Department also released a blistering review of the city’s policing and court practices, which led to the police chief, mayor and a key judge all stepping down.

Attorneys for the Brown family said last month that they intended to file a civil suit against Ferguson over the shooting. This came shortly after the Justice Department announced its decision not to seek civil rights charges against Wilson, a decision the Brown family called “disappointing” at the time.