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They are all being held without bond.

All live in El Paso County, although how they know each other is unclear. Woody and Sher are both in the military, and all four men are Facebook friends, 7NEWS has learned.

Investigators aren't saying what led to their arrests and their arrest affidavits have been sealed.

Authorities aren't releasing their mugshots because photo lineups are still being conducted.

The crime scene is still being investigated by crime lab and detectives will probably be there throughout Tuesday, Hanavan said.

Murder For Hire?

Christopher Wells and Amara Wells were in the midst of a contentious divorce, and Amara had a restraining order against her husband, according to court documents obtained by 7NEWS.

Christopher is accused of violating that restraining order on Jan. 21 and was arrested the day before the bodies were discovered. Wells was in custody on Wednesday morning when his daughter reported her mother's death.

The El Paso County Sheriff's Office said Christopher Wells was in custody from 11 a.m. Tuesday, Feb. 21, until he was transferred to the Douglas County jail at 1 p.m. Wednesday, Feb. 22.

Amara Wells had received thousands of text messages from her husband over the course of several days, according to court documents. He also e-mailed her and in one e-mail, Christopher talked about paying Amara back for some of her clothing that he destroyed.

That e-mail included this warning: "As you know, ignoring me has and will always have a negative impact."

Amara told authorities back in September that Christopher had withdrawn nearly $164,000 from the bank and had quit his job, according to court documents. In one e-mail, Christopher told her he was going to file for bankruptcy on March 1.

When 7NEWS asked Douglas County Sheriff's Office if this was possibly a murder-for-hire case, Hanavan responded, "You know, right now we're conducting this as a double homicide investigation and the only information that we're at liberty to discuss is that it was a homicide and we are following through with every possible lead."

Christopher Wells Violated Multiple Restraining Orders

The coroner said Amara and Robert died as a result of "sharp force injuries." The medical term is used to describe stab wounds, incised wounds and chop wounds.

Robert owns the sprawling house at 2470 Marlin Way with his wife, Tamara (Tammy) Wells Rafferty, who was out of town working when the bodies were found. Tammy Wells Rafferty is Christopher Wells' sister.

Court records show Christopher had violated multiple restraining orders and Amara had feared for her life. She also feared what her husband would do to himself.

In January, Amara told a sheriff's detective that she had a code word with her family in case it was needed and that she had filled out a release with her therapist in case anything happened to her.

She told a detective she "was at the end of her rope and in a hole that she can't get out of."

The Douglas County Sheriff's Office said this is still an active investigation and anyone who has additional information in the case is asked to call the tip line at 303-660-7579.

Hanavan said the sheriff's office may release more information as the investigation develops and may hold a news conference later in the week.