The verdict came on the fourth day of the trial, after less than four hours of jury deliberation.
East Pittsburgh police officer Michael Rosfeld was released on $250,000 bail Wednesday after killing Antwon Rose.
East Pittsburgh Officer Michael Rosfeld had been sworn in hours before shooting 17-year-old Rose last week.
People in Pittsburgh are calling for justice after a police officer killed the unarmed black teen on Tuesday.
His former honors English teacher remembered his poem after she found out that he was killed.
"We should not be having this rally because he should be here, he should not have been killed," the teen's aunt said.
The 17-year-old was running away from a traffic stop when he was killed by a Pittsburgh-area cop.