In a video that went viral, a man who was shot and killed by his estranged wife, who then shot him, has been identified as the man who purchased the gun that killed him.
It was later found to be a Glock .40 caliber pistol.
A woman also had a handgun she used to kill her husband.
The man, who has not been identified, was killed Wednesday in an incident that took place in an apartment complex.
The shooting occurred about 2:45 a.m. at the Westgate apartment complex in a suburb of Denver.
The woman, identified as 28-year-old Samantha K., was shot twice.
The gunman was also shot.
Police identified the deceased as Sam K. but have not released his name.
The gun used in the shooting was a Glock 9mm pistol, according to police.
The Glock is a semi-automatic handgun that shoots single rounds.
The weapon was bought by Samantha K. on July 31, police said.
Sam K.’s father said the shooting happened as he was leaving his daughter’s apartment.
“I heard a knock at the door.
When I opened the door, it was Sam K.,” said his father, who did not want to be identified.
He said the man in his apartment had a knife and threatened to kill his daughter if she came home.
“It was a very, very violent situation,” the father said.
“The man in the apartment said to her, ‘You’re going to pay for this, and you’ll pay for that, and when you pay for it, I’m going to kill you.’
And that’s what he said.”
The father said he went outside to help his daughter.
He heard gunshots.
“We got shot, and we didn’t hear anything,” he said.
A SWAT team entered the apartment complex and found the man’s body.
The SWAT team then searched the apartment for about two hours before bringing the man alive.
It is not clear whether Sam K., or the woman who killed him, knew who the gunman was or whether she was involved in the dispute over the gun.
In a statement, the Denver Police Department said the department is still investigating the shooting.
The department said the incident is under investigation.
A person who answered the phone at the apartment where the shooting took place could not be reached for comment.
ABC News’ Jennifer Nettles contributed to this report.