Nashville police said that "the actions of Officer Kinchloe in firing two shots, given the vantage point represented by her video, are under review by the police department."
"This tragic death today is a stark reminder of the dangers they face and the sacrifices they make," said Defense Secretary Lloyd Austin in a statement.
Lanz had previously enlisted in the U.S. Marine Corps in October 2012, but he never earned the title of Marine.
Officials would not formally confirm any deaths during the incident.
"Witnesses said they needed to use the restroom, however, they left the theater leaving [the suspect] behind," the police report reads.
Police said the boy accidentally fired the gun in the living room and the bullet traveled through the wall and into the kitchen, where it hit his mom in the head.
Pentagon police chief said there were "several casualties," but would not confirm or deny specific reports of deaths.
One of the injured employees is in critical condition, while another is stable and the last was already released from the medical center.
Three bystanders were injured in the shootout in Washington Heights, according to the New York Police Department.
A police officer suffered a minor leg injury during a pursuit of the suspect after he stole a U-Haul truck following the shooting on Tuesday.
Police have issued an appeal for information after Joana Peca, 27, was fatally shot inside a vehicle in St. Petersburg, Florida.
A fight and suspected threats of a shooting allegedly caused people to flee the indoor sports complex, resulting in numerous people getting trampled.
Chief Detective James Essig of the NYPD says that the incident is believed to be gang-related at this time.
TikTok star Anthony Barajas died Saturday morning after he was shot Monday in a movie theater in Corona, California, the police department said.
"Look at me, bro," he said in the video, which was posted by a local television news station. "Look at me. Look at me."
Authorities said they found the 7-year-old "bleeding on the bathroom floor, being held by a caregiver" after responding to the home for a "medical emergency."
Rylee Goodrich, 18, was killed in the movie theater shooting, while 19-year-old social media influencer Anthony Barajas is currently on life support.
The young boy was left unattended while the adults smoked marijuana and ate.
The incident also left two police officers injured, and one remains "in very, very serious" condition, according to a local official.
The 22-year-old reportedly told investigators he committed the killings in an effort to end the sex industry.
Four men have been arrested in connection to 13-year-old Loyalti Allah's death, Monroe police said.
The two sons of the suspected shooter and their mother were killed during the incident, authorities said.
Party attendees reportedly stoned an alleged gunman to death after he opened fire early Monday morning, killing one person and injuring three others in Fort Worth's Como area.
Authorities are searching for the vehicle involved, which they believe was hit with return fire from the crowd.
Wasco Mayor Alex Garcia mourned the slain sheriff's deputy and said: "In an instant, our lives can change forever."
Rep. Mullin said of the officer: "He was physically and emotionally distraught. I actually gave him a hug and said, 'Sir, you did what you had to do.'"
A judge recently overturned John Tiedjen's conviction after 32 years. Now, he plans to marry the sister of the man he was accused of killing.
The project has been put on hold "until full consultation with New Zealand's Muslim community has taken place."
Some "incels"—short for "involuntary celibate"— advocate violence in support of their belief that women unjustly deny them sexual or romantic attention.
Police in Cherokee County, East Texas, say the killer got away in one of the victim's cars and are now hunting for a 2017 red Dodge Challenger.