Water flows over the Nevada Fall near Liberty Cap as seen from the John Muir Trail in Yosemite National Park in California. The National Park Service says a man died after falling into a river at the park on Christmas Day. The park says an investigation into the death is taking longer than usual because of the partial government shutdown.

(National Park Service via AP)

At a Glance

Most of Yosemite National Park's staff have been furloughed because of the shutdown.A visitor fell and fatally injured his head four days after the shutdown began.Rangers reached the man within an hour of his fall, but he died of his injuries.A magazine was the first source to report the death 10 days after it happened.Two others have died at national parks since the shutdown began.

News of a man dying in Yosemite National Park on Christmas Day wasn't made public until Friday because of the partial government shutdown. His death is one of three that have happened at national parks since the shutdown began.

Outside magazine, which first reported the death, quoted a government spokesman as saying the and fell into a river. The man was in the Silver Apron area, a body of water between Vernal and Nevada falls, the spokesman said.

Rangers arrived on the scene in less than an hour, National Park Service spokesman Andrew Muñoz told the magazine, and gave the man medical attention. However, he died from his injuries.

(MORE: Human Waste, Trash Overwhelm Some National Parks During Government Shutdown)

Muñoz said the shutdown is causing the investigation to take longer than usual. He also said no news release was issued about the death because of the shutdown, which began four days before the man fell.

In addition to the man in Yosemite, the Washington Post reports since the partial government shutdown began on Dec. 21. Those two deaths have previously been reported, however.

A 14-year-old girl from San Jose, California, fell to her death at the , the Arizona Republic reported. The overlook is part of the Glen Canyon Recreation Area. The Coconino County Sheriff's Office announced that death.

On Dec. 27, Dr. Laila Jiwani, 42, of Plano, Texas, died after being struck by a tree that fell during , the Star-Telegram reported. The Associated Press reported on Dec. 29 that Jiwani's death.

Outside magazine noted that at least 10 people died in Yosemite in the last year, including another man who slipped and fell to his death near Nevada Fall.

In 2017, there were .

National Park Service spokesman Jeremy Barnum told the Post seven people have died in national parks since the shutdown began. Officials believe that four of the deaths were suicides, he added.

Barnum said an average of six people die each week in the park system. He said that includes "accidents like drownings, falls, and motor vehicle crashes and medical related incidents such as heart attacks."

Yosemite, like other parks, has remained open to visitors during the shutdown. Crowds of visitors have been driving into the park, which, because of the shutdown, isn't collecting admission.

(MORE: Government Shutdown Puts a Cloud Over Global Weather Conference)

The crush of visitors and lack of staff to take care of maintenance and sanitation issues has caused an .

A road in Yosemite National Park is lined with trash on Dec. 31, 2018. Human waste, overflowing garbage, illegal off-roading and other damaging behavior in fragile areas are beginning to overwhelm some of the West's iconic national parks as a partial government shutdown left the areas open to visitors but with little staff on duty.

(Dakota Snider via AP)

"," Yosemite Valley resident Dakota Snider told USA Today. "It’s so heartbreaking. There is more trash and human waste and disregard for the rules than I’ve seen in my four years living here."

Quartz estimates that since the shutdown began on Dec. 22.

This week, the park announced and several closed areas.

Under the park service's shutdown plan, law enforcement staff remains on duty.

Information from the Associated Press was included in this report.