Hundreds of people in Nevada have turned out to donate blood to those injured in a mass shooting in Las Vegas.

Officials put out a call for blood donations the morning after the attack, when a lone gunman killed at least 58 people and injured more than 500. By that afternoon, social media teemed with photos of the long lines at blood drive centres across the state.

A Red Cross blood drive at the Las Vegas Convention Centre had to turn away donors because it was too full, local reporters said. Other locations had a six to eight hour wait, and were asking donors to schedule appointments for Thursday or Friday.

Witnesses reported between 600 and 1,000 people waiting in line at various United Blood Services locations. The organisation is running the blood donation operation for University Medical Centre (UMC) – the hospital where many of the shooting victims are being treated.

A UMC spokesperson told The Independent she could see a line out the door of the Blood Services location across the street on Monday afternoon.

Las Vegas shooting – in pictures Show all 15 1 /15 Las Vegas shooting – in pictures Las Vegas shooting – in pictures People scramble for shelter at the Route 91 Harvest country music festival after gun fire was heard Getty Las Vegas shooting – in pictures People carry a person at the Route 91 Harvest country music festival after shots were fired David Becker/Getty Las Vegas shooting – in pictures People run from the Route 91 Harvest country music festival after gun fire was heard David Becker/Getty Las Vegas shooting – in pictures A handout photo released via Twitter by Eiki Hrafnsson (@EirikurH) showing concertgoers running away from the scene (C) after shots range out at the Route 91 Harvest festival on Las Vegas Boulevard EPA/Eiki Hrafnsson Las Vegas shooting – in pictures People lie on the ground at the Route 91 Harvest country music festival after hearing gun fire Getty Las Vegas shooting – in pictures A man in a wheelchair is taken away from the Route 91 Harvest country music festival after hearing gun fire David Becker/Getty Las Vegas shooting – in pictures People stand on the street outside the Mandalay Bay hotel near the scene of the Route 91 Harvest festival on Las Vegas Boulevard EPA/Paul Buck Las Vegas shooting – in pictures FBI agents confer in front of the Tropicana hotel-casino after a mass shooting during a music festival on the Las Vegas Strip Reuters/Las Vegas Sun/Steve Marcus Las Vegas shooting – in pictures Las Vegas police run by a banner on the fence at the Route 91 Harvest country music festival grounds after shots were fired David Becker/Getty Las Vegas shooting – in pictures An injured person is tended to in the intersection of Tropicana Ave. and Las Vegas Boulevard after a mass shooting at a country music festival Ethan Miller/Getty Las Vegas shooting – in pictures Metro Police officers pass by the front of the Tropicana hotel-casino after a mass shooting at a music festival on the Las Vegas Strip Reuters/Las Vegas Sun/Steve Marcus Las Vegas shooting – in pictures A woman sits on a curb at the scene of a shooting outside of a music festival along the Las Vegas Strip AP/John Locher Las Vegas shooting – in pictures A cowboy hat lays in the street after shots were fired near a country music festival in Las Vegas Getty Las Vegas shooting – in pictures Las Vegas Metro Police and medical workers stage in the intersection of Tropicana Avenue and Las Vegas Boulevard South after a mass shooting at a music festival on the Las Vegas Strip Reuters/Las Vegas Sun/Steve Marcus Las Vegas shooting – in pictures Sheriff Joe Lombardo (2-R) speaking during a press briefing in the aftermath of the active shooter incident on Las Vegas Boulevard EPA

Nevada resident Michelle White arrived at the at UMC’s Delta Point blood drive at 7:30 am with her husband, a state assemblyman. After dropping off coffee with doctors and nurses, the two put out a call for donors on social media.

Within an hour, Ms White said, the location was flooded. More than 500 people turned up to that location alone.

“It was unbelievable,” Ms White told The Independent. “This little parking lot just became a massive crowd of people willing to donate.”

Local businesses donated food and water, and labour groups came to set up tents. The mood, Ms White said, was “resilient”.

A spokesperson from the United Blood Services told USA Today the organisation had sent nearly 200 units of blood to local hospitals. The Red Cross said it had sent more than 250 more.

The United Blood Services thanked those who had donated in a statement on Facebook.

“Already the local Las Vegas community has come forward in solidarity to support and honour those impacted by this senseless shooting,” the statement read. “It’s the blood on the shelf that saves lives when tragedy strikes.”

The donations would be available to hospitals in 24 to 36 hours, the organisation said.

The state is still reeling from the shooting at Mandalay Bay Resort in Casino in Las Vegas on Sunday, deemed the deadliest in modern US history. Police have identified 64-year-old Stephen Paddock as the shooter, and are still looking for a motive.

Congresswoman Dina Titus, who represents Nevada's first congressional district, praised the community for coming together in the wake of the tragedy.