The case comes in the wake of protests that swept the nation this summer when a neighborhood watch volunteer, George Zimmerman, was acquitted after fatally shooting a black teenager, Trayvon Martin, during an altercation in Sanford, Fla. Mr. Martin had been buying snacks. In September, in Charlotte, N.C., a police officer was charged with voluntary manslaughter after he shot and killed Jonathan Ferrell, 24, a former college football player who had also been seeking help after a car accident.

Ms. McBride’s case has stoked similar outrage, and was the subject of at least two protests and rallies this weekend, said LaToya Henry, of the Detroit branch of the N.A.A.C.P., “because this was a young black woman in a neighborhood that is predominantly white.” The local and national N.A.A.C.P. will await a final report before deciding on further actions, Ms. Henry said.

The investigation into the death is continuing, Maria Miller, a spokeswoman for the Wayne County prosecutor’s office, said on Sunday. The police will present evidence to prosecutors this week, she said, “so we can make a decision on whether to issue charges.”

Rev. W. J. Rideout III, a pastor at All God’s People Church in Detroit who attended a vigil last week at the home where the shooting occurred, said the family was disheartened. “They don’t feel like the justice system has given them justice,” he said.