A 59-year-old woman was arrested on suspicion of first-degree murder in the shooting death of a man in Calhan on Monday afternoon, according to the El Paso County Sheriff's Office.
Authorities said Heather Marie Neville allegedly shot and killed the man during an altercation.
The victim had apparently been in a heated argument over a septic tank hookup before his death, said Scott Hurd, a man who lives on the property where the shooting occurred.
The shooting was reported about 12:20 p.m. from a home on the 9800 block of Calhan Highway, just north of Judge Orr Road, said Commander Jeff Kramer of the Sheriff's Office.
Five adults and five children were at the home at the time of the shooting.
Hurd, who lives in an RV on the property with his wife, said the victim, whom he identified as "Mike," had moved to Colorado from Oregon with his girlfriend, her five kids and her mother a couple of weeks ago.
He said the children are age 12 or younger. Like he and his wife, they'd rented land and parked their RV.
Two women whom Hurd identified as "Heather" and "Michelle" also rented space on the property for their RV and were present at the time of the shooting, Hurd said.
He said that recently they'd also argued about Hurd's septic tank connection.
"They didn't like me having a permanent hookup to the septic tank," he said, adding that last week, one of the women had "pulled a gun" over the issue.
Hurd, along with the property owner, who did not want to be identified, had gone to Colorado Springs to buy supplies for the septic tank when the shooting occurred.
They had planned to create a second hookup for the septic tank Monday.
"It would have been done by 4 (p.m.) today," he said.
Before they made it home with the supplies, Hurd said they received a call from the victim.
"He called and said they were having an argument about the septic line," he said.
Hurd said he heard a "heated argument" as he was talking to the victim over the phone, and then shortly afterward he heard moaning,
"Life is so valuable, to throw it away over something like this," said Hurd, shaking his head.
The landowner said the victim was 31 years old, and described him as "a pretty good guy" who helped out around the property.
The victim's identity and cause of death were not released Monday.
"This is being investigated as a homicide, but of course we'll wait for the coroner to conduct an autopsy and officially rule on the cause and manner of death," Kramer said.
Neville is being held in the El Paso County jail without bond.