Lamont Pride is accused of murder in the death of Officer Peter Figoski.
Prosecutors say Pride and four others plotted to rob a drug dealer who lived in a shabby basement apartment in Brooklyn, but they were interrupted by police.
Authorities say that as Pride tried to escape, he came face-to-face with Figoski. The officer was struck in the head and died at a hospital.
Pride's lawyer says he didn't intentionally shoot the officer.
The case against another suspect, Michael Velez, is still being heard by a second jury. Two others will be tried later.
A fifth suspect, Ariel Tejada, testified against the others.
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