By Nick Maslow
October 03, 2017 at 11:04 AM EDT

Jason Aldean on Tuesday opened up about the devastating loss of life at the Route 91 Harvest Festival in Las Vegas on Sunday, when 64-year-old gunman Stephen Paddock killed at least 59 people and injured 527 others at Aldean’s performance.

“Over the last 24 hrs I have gone through lots of emotions. Scared, Anger, Heartache, Compassion and many others,” Aldean, 40, wrote on Instagram, reflecting on the deadliest mass shooting in U.S. history. “I truely dont understand why a person would want to take the life of another. Something has changed in this country and in this world lately that is scary to see.”

Aldean, whose wife Brittany is pregnant with a baby boy, went on to encourage unity in the wake of tragedy. “This world is becoming the kind of place i am afraid to raise my children in,” he wrote. “At the end of the day we arent Democrats or Republicans, Whites or Blacks, Men or Women. We are all humans and we are all Americans and its time to start acting like it and stand together as ONE! That is the only way we will ever get this Country to be better than it has ever been, but we have a long way to go and we have to start now.”

He continued: “My heart aches for the Victims and their families of this Senseless act. I am so sorry for the hurt and pain everyone is feeling right now and there are no words i can say to to take that pain away. Just know u all are in my heart and my prayers as we all go through this together. Time to come together and stop the hate! #stopthehate #prayforlasvegas.”

In video of the shooting, Aldean is seen performing onstage before bullets were fired into the crowd from Paddock’s 32nd-floor hotel room at the Mandalay Bay casino and resort. Aldean also spoke out on Monday, calling the events “horrific” and saying that he and his crew were safe.

In the wake of the shooting, several celebrities have demanded gun control policy reform on social media.