Seven Marines killed in Nevada training incident

The incident occurred shortly before 10 p.m. Monday and involved Marines with the 2nd Marine Division, according to the 2nd Marine Expeditionary Force based at Camp Lejune, N.C.

The identities of the Marines who were killed have not been released.

Senate Majority Leader Harry ReidHarry ReidDems double down on Nevada Latino vote Heck's rejection of Trump imperils Nevada Senate race Pelosi blasts GOP leaders for silence on Trump MORE (D-Nev.) acknowledged the Marines killed on the Senate floor Tuesday.

“My thoughts are with those who were injured. My heart goes out to the families of those who lost their lives. And my sympathies are with their fellow Marines, who are also grieving this loss," Reid said.

Sen. Dean HellerDean HellerGOP senators avoid Trump questions on rigged election More Senate Republicans pressure Treasury over debt-equity rules Funding bill rejected as shutdown nears MORE (R-Nev.) tweeted: “Thoughts and prayers are with the families who lost a loved one in the Hawthorne Army Depot explosion. Grateful for their service.”

The Hawthorne Army Depot is used to demilitarize ammunition and spans nearly 150,000 acres.