The shooting left 50 people dead.
Donation centers in the Las Vegas area were packed with hundreds looking to give blood to those in need in the aftermath of the largest mass shooting in modern U.S. history.
At least 58 people were killed and more than 500 people injured after gunman Stephen Paddock opened fire above a crowded country music festival across from the Mandalay Bay Resort and Casino on the Las Vegas Strip.
A heart-wrenching photo of dried blood on the floor at Sunrise Hospital Las Vegas hospital emphasized the need for donors to help after the deadly shooting at the Route 91 Harvest Festival.
Read: Witnesses Recall Chaotic Nightmare as Las Vegas Concert Gunman Kills More Than 50
Among the many donation centers that are open locally, United Blood Services is also accepting donations from a variety of banks across the U.S., and thousands of units of blood are currently being transferred to the state, reports said.
According to the organization, the blood type needs that are most dire are O negative, O positive blood, and platelets.
"If you have the ability to donate blood to help the cause, please do so," Clark County Sheriff Joseph Lombardo said.
Shanda Maloney, a local resident, said more than a thousand people have lined up at her local blood bank in Las Vegas.
"People [are] just at this blood bank location helping, walking the line with food and water and picking up trash. This is what we do not only as a community, but as human beings," Maloney said.
Jenna Tucker, who works at a country music station in California, decided to head out to donate blood after she heard about the need.
“I wanted to do something right now that could help people. That was the quickest and easiest thing I could do that would help,” Tucker said. “If people can’t donate money, donating blood is something they can do to help.”
Read: Vegas Gunman Stephen Paddock's Family 'Dumbfounded' After Massacre Leaves At Least 58 Dead
A GoFundMe has also been started by Clark County Commission Chair Steve Sisolak, to raise funds for the victims of the shooting.
The campaign’s initial goal was 500,000 but now that it has already raised more than $700,000, the goal was upped to $1 million.
To donate to the campaign, click here.
Watch: Survivor in Las Vegas Massacre Says Officer Saved Her Life: 'He Never Left Me'
