Timeline of the controversy

January

• Officers Gregory Neubert and Michael Tietjen arrest George "Troy" Patterson for allegedly selling drugs; the next day he complains to police that the officers had planted drugs on him and roughed him up.

March

• A video highlights discrepancies between the officers' reports and the arrest, prompting a judge to dismiss charges against Patterson. Dozens of criminal prosecutions involving the officers are threatened.

April

• Police Chief Gil Kerlikowske clears the officers of using excessive force and planting drugs.

May

• A forensic expert, a King County Superior Court judge and a civilian police auditor raise questions about the accuracy of the arrest reports.

• The NAACP calls for Kerlikowske's resignation.

June

• A leaked draft report by a civilian-review board says Kerlikowske repeatedly interfered in the investigation of Patterson's arrest. The board calls for increased oversight of police.

• Mayor Greg Nickels orders the civilian director overseeing internal police investigations to review the Patterson arrest, the chief's role and the review panel's role.