The boyfriend of the handcuffed woman who was seen frantically ringing doorbells at 3am in the morning, killed himself Wednesday with a single shot to the head, cops have confirmed to DailyMail.com.

But the woman — who was described as a ‘victim of family violence’ — is safe and is now being consoled by her family, Sheriff’s Officer Scott Spencer said.

The new development in Montgomery, Texas, adds a wrinkle to the mystery of why the woman dressed only in a T-shirt was desperately looking for help in the early hours.

Cops said she is not Caitlin Dennison, the 19-year-old who went missing from Reno, Nevada, in January and whose sister believed tattoos on the two women matched.

The dead man is still to be identified publicly. Spencer, a lieutenant with the Montgomery County Sheriff's Department said he was 49 and confirmed that the woman who had been ringing doorbells was his 32-year-old live-in girlfriend.

'She is originally from the Dallas area,' Spencer told reporters at an impromptu press conference a few hundred yards from the scene of the drama. 'The two were in a boyfriend/girlfriend situation.'

He said investigators had not yet had a chance to interview her fully.

Law enforcement cordoned off the entrance to the Sunrise Ranch development in Montgomery, a well-to-do city an hour north of Houston, allowing only residents in.

Crime scene: The man shot himself on the 18400 block of Sunrise Pines Drive at 11 am. He was 49 and the live-in-boyfriend of the 32-year-old woman caught on camera frantically ringing doorbells in a road nearby at 3am last Friday

Statement: Scott Spencer of Montgomery Sheriff's department said: 'He was deceased form a single gunshot which we believe was self-inflicted.'

Just a street away: How the mystery of where the woman came from was solved

Grim ending: Law enforcement surrounded the house where the 49-year-old man took his own life, and said his girlfriend was safe and being 'consoled by her family'

Sheriff's deputies were called to the house in the 18400 block of Sunrise Pines Drive at 11 am on Wednesday, Spencer said. They were investigating a man who had been making threats of suicide.

But when they arrived they found they were too late and the man was already dead.

‘When deputies arrived at the scene they were unable to get an answer at the door and at that time forced entry,’ Spencer said.

That’s when they found the body.

‘He was deceased from a single gunshot which we believe was self-inflicted,’ Spencer said.

He said the man had left a suicide note that ‘helped identify the female and some of the circumstance behind why those events occurred.’

He confirmed that the man's live-in partner was the woman who had been captured on security camera ringing the doorbell of a house in neighboring Sunrise Oaks Court — one street over from Sunrise Pines Drive, early on Friday morning.

'She is safe and is being consoled by her family at this time,' said Spencer. She said the woman had never been reported as missing.

He said the woman could not be identified because she is ‘a family violence victim.’

‘There are some issues regarding the video why she is wearing those restraints and the circumstances surrounding it. we only have one side of the story right now.’

John Bradley, a neighbor who lives on the estate, told DailyMail.com a white van that was parked in the drive of the dead man's house, was similar to one that was being driven around the development in the early hours when the woman was ringing bells trying to get attention.

'It's all very suspicious,' said Bradley, who works in the oil and gas industry. 'First we had this woman going around at 3.30 in the morning and now this. I've never seen anything like this in all the time I have lived here.'

The case sparked massive interest after Jennie Drude posted on Facebook the video of the woman ringing her doorbell. She also took it to police.

The woman seems to be walking quietly up to the door of the home with what appears to be some sort of restraints on her wrists, with no pants or shoes on.

She also tried to get attention from other houses but by the time residents responded she was already gone.

The woman is seen on a resident's security camera, around 3am Friday approaching the door with no pants or shoes on. She has now been found safe.

The woman appeared to be in need of help- and now the cops in Sunrise Ranch, Texas are asking the public if they have any information

After she rings the doorbell, we get a better look at her face's profile as she appears to look nervously down the block

The Sheriff's Department Wednesday responded to a report of suspicious shots fired in the tiny neighborhood of Sunrise Ranch where the woman was seen ringing on a doorbell Friday at 3am. It is unclear of the two incidents are connected

Jennie Drude's home security camera captured the chilling video of the woman who was ringing doorbells in Texas

In the short clip the woman is seen emerging from behind a bush, she seems to be trying to be quiet, and she reaches for the doorbell.

There appears to be what may be restraints on her wrists. Drude described the woman as appearing to be out of breath from what she could see on her home's surveillance video.

John Bradley, a neighbor who lives on the estate, told DailyMail.com a white van that was parked in the drive of the dead man's house, was similar to one that was being driven around the development in the early hours when the woman was ringing bells trying to get attention.

Another resident, who did not want to be identified, told Click2Houston, 'We were dead asleep in our beds. My husband was woken up by doorbell ring. It rang probably 20 to 30 times.

By the time her husband answered the door, no one was there.

'He walked outside no one was in sight. It's like she disappeared in thin air,' the resident said.

'It was kind of scary because this girl looked like she was just in a shirt. She looked like she had wrist restraints on her wrist and she was barefoot. You can see her with a worry on her face looking around,' the resident said.

She rang on at least five residents' doorbells in the area.

No one in the tiny community recognizes her from the neighborhood.

Law enforcement canvassed the area and went door-to-door to speak with residents. They are also reviewing other security footage from the area.

The area surrounding the rear of the small neighborhood is densely wooded.

Not her: Missing Caitlin Denison, 19, from Reno, Nevada, is not the woman found safe, the county sheriff's department said

Law enforcement canvassed the neighborhood, conducted a door-to-door check interviewing residents, and is currently reviewing surveillance camera footage from the area, the Montgomery County Sheriff's Office said.

On Tuesday Rachael Denison told DailyMail.com that she thought the mystery woman could be her 19-year-old sister Caitlin who ran off to Midland, Texas, 450 miles from Montgomery, with a man she barely knew in January.

Her family doesn't know his name, and the last thing Caitlin told her sister was 'This guy makes me scared for my life.'

In a review of the surveillance footage released by the Montgomery County Sheriff's Office, her sister says she believed she had identified Caitlin's various tattoos.

'The similarities are too much to miss,' Dennison told DailyMail.com. 'Please. I want my sister home so badly,' Rachael adds.

But the mystery of missing Caitlin is not linked to the Montgomery case, Spencer insisted.