Tragedy struck at the Grand 16 Theater in Lafayette, La., on Thursday night (July 23), when a gunman opened fire during a showing of Amy Schumer's new movie Trainwreck.

KPEL-FM reports that nine people were injured and three, including the shooter, were killed during the incident. The victims range in age from late teens to late 60s; at least two have been released, and at least one remains in critical condition.

The alleged shooter is 59-year-old John Russell Houser, an Alabama man whom Lafayette Police Chief Jim Craft describes as a drifter, who was staying at a Lafayette motel.

“His criminal past is very aged,” Craft says.

Craft adds that the suspect reportedly worked alone.

“Why would a guy come into a theater and randomly start shooting people?” Craft asks. “He is deceased. So, we may never know.”

As news of the shootings began circulating, numerous country artists, including Kelsea Ballerini, Rodney Atkins and Chuck Wicks, offered their condolences to and prayers for those affected.

"My heart is broken for my home community in Louisiana. Such a tragedy," writes Hunter Hayes, who is from the Lafayette area. "Sending all the prayers and love to everyone back home!"

Click through the photo gallery above to see more artists' reactions and tweets of support.