Country music artists were praying for the fans and workers who were attending the final night of the Route 91 Harvest Music Festival, an outdoor country music concert in Las Vegas, when a gunman opened fire from nearby Mandalay Bay Resort and Casino, killing at least 58.
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More than 515 others were injured in the shooting, which sent concertgoers scrambling for their lives. Officials said the gunman killed himself.
One concertgoer told ABC News that shots erupted as Jason Aldean, the headliner, was playing.
"Kinda sounded like some fireworks going off," Mike Cronk, 48, told ABC News. "I think there was the first kinda volley, and then all of the sudden second volley. My buddy's like, 'I just got hit.'"
Country artist Chris Young, who also performed at the festival, tweeted, "I'm lucky to be alive."
Young, Jake Owen, Aldean, Lee Brice, Dylan Scott, Luke Combs and Josh Abbott were among those who performed at the festival.
Young tweeted, "Spent I don't know how long on the floor of a trailer behind the stage ... know multiple people are dead. Listening to that gunfire ... I'm literally shaking still."
He added, "I'm lucky to be alive. As are many others ... and so many people are gone ... this is heartbreaking."
Spent I don't know how long on the floor of a trailer behind the stage... know multiple people are dead. Listening to that gunfire...— ChrisYoungMusic (@ChrisYoungMusic) October 2, 2017
I'm literally shaking still.— ChrisYoungMusic (@ChrisYoungMusic) October 2, 2017
I'm not gonna say anything else other than I'm lucky to be alive. As are many others... and so many people are gone... this is heartbreaking— ChrisYoungMusic (@ChrisYoungMusic) October 2, 2017
Owen wrote on Twitter, "Gun shots were ringing off of the stage rigging and road cases. No one knew where to."
"Praying for everyone here in Vegas," he went on. "I witnessed the most unimaginable event tonight. We are okay. Others aren't. Please pray."
Owens also thanked the police and first responders "for keeping us safe."
Gun shots were ringing off of the stage rigging and road cases. No one knew where to go..thank you LVPD and responders for keeping us safe— Jake Owen (@jakeowen) October 2, 2017
Praying for everyone here in Vegas. I witnessed the most unimaginable event tonight. We are okay. Others arent. Please pray.— Jake Owen (@jakeowen) October 2, 2017
In the wake of the bloodshed, Aldean published an emotional post on Instagram: "Pray for Las Vegas."
Tonight has been beyond horrific. I still dont know what to say but wanted to let everyone know that Me and my Crew are safe. My Thoughts and prayers go out to everyone involved tonight. It hurts my heart that this would happen to anyone who was just coming out to enjoy what should have been a fun night. #heartbroken #stopthehate
Hearts out to Vegas. Route 91 concert, stage I played two nights ago. Musicians, fans, workers, you are all in our prayers right now..— Lee Brice (@leebrice) October 2, 2017
Prayers to everyone at @Route91Harvest in Las Vegas. We are ok, had literally just left for the airport. ???? What is wrong with this world!!— Dylan Scott (@DylanScottCntry) October 2, 2017
Active shooter at @Route91Harvest in Vegas. We're safe. Love you guys.— Luke Combs (@LukeCombsMusic) October 2, 2017
Praying for everyone in Vegas. We were there last night and many of our friends are still there. Praying for you all.— LANCO (@LancoMusic) October 2, 2017
Active shooter at Route 91 in Las Vegas. Us and the band are safe currently. Pray— Muscadine Bloodline (@MuscadineBLine) October 2, 2017
My God I can't even believe what I'm watching at Route 91— Jackie Lee (@JackieLeeMusic) October 2, 2017
Praying for everyone at Route 91. That crowd was one of the best I've played for all year. This news is devastating. My camp is home & safe.— Lauren Alaina (@Lauren_Alaina) October 2, 2017
Abbott gave an update Monday afternoon about his band, saying: "Everyone in our band and crew are safe."
"I (Josh) had just left and was in the Mandalay Bay on the 20th floor with my fiancée during the shooting just a few floors away," the statement continued. "The band & crew were on the concert grounds and saw people get shot. Some of my crew members were hit with shrapnel, but not injured. We are deeply disturbed by this horrific act of violence and send our thoughts and prayers to the victims and their families. It was a long awful night but we are blessed to be alive and healthy. Hug your loved ones tight."
Other country artists said they are praying for those there.
Watching this horrific news from Las Vegas and Route 91 Festival. We played this festival last year. Praying for everyone's safety.— Martina McBride (@martinamcbride) October 2, 2017
Feeling absolutely helpless watching the Vegas situation unfold via social media. Fans, friends, artists, crews, everybody, please be safe. This is so scary.— Dan + Shay (@DanAndShay) October 2, 2017
Please please pray. I have family in Vegas hunkered down hiding. Please pray— Brennley Brown (@BrennleyBrown) October 2, 2017