A jury will decide whether a Colorado man was sane when he opened fire and killed random people at a Colorado grocery store in 2021.

Witness testimony continues as people inside a King Soopers store in Boulder took the stand and described what they saw and heard on March 22, 2021. Ahmad Alissa is accused of shooting and killing 10 people, including Boulder Police Officer Eric Talley.

Lawyers for the accused gunman are using the state’s insanity defense, arguing that he was mentally ill at the time of the 2021 shooting that left 10 people dead at a supermarket.

A pharmacist who survived a 2021 mass shooting at a Colorado supermarket says she heard him say, “This is fun” at least three times during the shooting

A pharmacist working at the time of the shooting told the jury Thursday she heard the accused shooter screaming that he was having "fun."

Sarah Chen described how she hid with her coworkers in the store in the college town of Boulder after Ahmad Al Aliwi Alissa opened fire

As gunshots peppered the grocery store, a pharmacist heard the alleged Boulder mass shooter shout: “This is fun! This such fun!”