"Our Nation is heartbroken. We mourn with all whose loved ones were murdered and injured in last night's horrible tragedy in Las Vegas, Nevada. As we grieve, we pray that God may provide comfort and relief to all those suffering." - US President Donald Trump
"Australia mourns with America tonight after shocking senseless attack in Las Vegas." - Australian Prime Minister Malcolm Turnbull
"Michelle & I are praying for the victims in Las Vegas. Our thoughts are with their families & everyone enduring another senseless tragedy." - Barack Obama, former US president
"To victims, families & loved ones affected by this senseless violence in Las Vegas, Karen & I are praying for you & offering our love. The hearts & prayers of the American people are with you. You have our condolences and sympathies. To the courageous first responders, thank you for your acts of bravery." - Mike Pence, US vice-president
"Our grief isn't enough. We can and must put politics aside, stand up to the NRA, and work together to try to stop this from happening again." - Hillary Clinton, former US Secretary of State and democratic presidential candidate
"Thinking of the victims and responders in Las Vegas. This should be unimaginable in America." - Bill Clinton, former US president
"I was shocked by the news from Las Vegas. Our sympathy and condolences go to the relatives and families of the victims." - Angela Merkel, German Chancellor
"Deeply saddened to learn of the shooting in Las Vegas." -Pope Francis
"The UK's thoughts are with the victims and the emergency services responding to the appalling attack in Las Vegas." - Theresa May, British Prime Minister
"I am horrified by the awful attack at a music festival in Las Vegas this morning. The United Kingdom stands with the American people against this indiscriminate violence. My thoughts are with all those caught up in it." - Boris Johnson, British Foreign Secretary
"Thoughts & prayers are NOT enough. Not when more moms & dads will bury kids this week, & more sons & daughters will grow up without parents. Tragedies like Las Vegas have happened too many times. We need to have the conversation about how to stop gun violence. We need it NOW." - Democratic Senator Elizabeth Warren
"I condemn in the strongest terms possible today's terror attack in Las Vegas. I sincerely hope that such attacks won't happen in the future. On behalf of the Turkish people, I offer my condolences to the families and loved ones of the victims and all Americans." - Tayyip Erdogan, President of Turkey
