Prosecutor Ken Kupfner loaded dummy bullets into a 30-round magazine in a hushed courtroom Friday morning. He slowly pushed each bullet into the magazine — the same type of magazine used by the man who carried out a mass shooting at a Boulder King Soopers grocery store in 2021,

The fate of a gunman now rests in the hands of a 12-person jury, who are tasked with determining not if he committed the heinous act, but whether he was legally insane when he drove to a Boulder, Colorado grocery store and opened fire, killing 10 people on March 22, 2021.

Ten people were killed in March 2021 at a King Soopers supermarket in Boulder, Colo. The gunman has pleaded not guilty by reason of insanity.

A grocery store the serves neighborhoods on the city's east side is shutting its doors in early November. According to Niemann Foods director of consumer affairs Gerry Kettler, the County Market store at 2777 S. Sixth St. has not been able to renew its lease.

Both the prosecution and defense presented closing arguments in the Boulder grocery store shooting trial on Friday.

Jury deliberations in the King Soopers shooting trial were set to begin following closing arguments by both the prosecutor and the defense Friday.