LOS ANGELES — One of the two police officers involved in the shooting death in August of Ezell Ford, an unarmed, mentally ill black man, behaved improperly throughout the confrontation, and the other was unjustified in drawing his weapon in one instance, a civilian oversight committee for the Los Angeles Police Department ruled Tuesday.

The decision by the commission came after nearly three hours of public comment, with dozens of critics calling the death of Mr. Ford the latest example of overly aggressive police tactics that target black and Latino men.

The commission found that both officers acted improperly when they drew their guns, and that one officer also acted improperly in both approaching Mr. Ford and using his gun. The commission did not elaborate on the reasons for its decision.

What will next happen to the officers rests with Charlie Beck, the chief of the police, who previously said both officers had acted appropriately.