The shooting happened in Grantsville, Utah.
The death of the second person was confirmed Sunday evening by FBI spokesman Jason Wandel. He also said the two congregants who opened fire on the suspect were part of a security team at the West Freeway Church of Christ in White Settlement.
There is no word on a motive for the shooting.
A database compiled by The Associated Press shows there were more mass killings in 2019 than any year dating back to at least the 1970s, punctuated by a chilling succession of deadly rampages during the summer.
The shooting stemmed from a dispute at the memorial party, Chief of Patrol Fred Waller said at a news conference. He said shots were first fired just after 12:30 a.m. The party was being held in honor of someone who was killed in April.
13 were wounded in a mass shooting Sunday in Chicago.
A survivor and relatives of nine victims of the 2012 massacre filed the wrongful death lawsuit against Remington in 2015, saying the company should have never sold such a dangerous weapon to the public and alleging it targeted younger, at-risk males in marketing and product placement in violent video games.
It was on December 14, 2012 that a gunman entered Sandy Hook school and killed 26.
Six people, including a police officer and three bystanders, were killed in a furious gun battle Tuesday that filled the streets of Jersey City with the sound of heavy fire for hours, authorities said.
Authorities investigating the attack are reportedly focused on finding several unaccounted for Saudi nationals linked to the shooting.
"The 2018 Yearbook" remembers the 37 people who were killed in school shootings throughout the year.
A shooter identified as a U.S. sailor opened fired at Pearl Harbor Naval Shipyard late Wednesday, leaving two victims dead and one injured before killing himself, officials at Joint Base Pearl Harbor-Hickam said.
Domico Dones, 29, was arraigned Monday in connection to the Orinda shooting that left five people dead. He pleaded not guilty to two felony charges.
Bureau of Alcohol, Tobacco, Firearms and Explosives announces a reward of up to $20,000 for information on the mass shooting Halloween night in Orinda.
The Los Angeles County sheriff revealed Thursday that the .45 caliber handgun a teenager used to kill two fellow high school students and himself in Santa Clarita last week was a ghost gun
Authorities announced Thursday that the student who shot five classmates, killing two, at Saugus High School in Santa Clarita, used a "kit gun" assembled from parts. These "ghost guns" are unregistered and virtually untraceable.
A 16-year-old boy who shot five fellow students -- killing two -- before turning the gun on himself at a Southern California high school has died.
The lawsuit says Remington Arms should never have sold a weapon as dangerous as the Bushmaster AR-15-style rifle to the public, which gunman Adam Lanza used to kill 20 first graders and six educators.