The search for missing mother-of-four Suzanne Clark Simpson led to a large-scale search of a landfill near her Texas home on Tuesday – with police predicting there was a “good chance” of finding her body there.

Multiple law enforcement agencies began searching a landfill near San Antonio wearing hazmat suits on Tuesday, nine days after Simpson disappeared following an alleged argument with her husband, a real estate tycoon.

“We are confident that there is a good chance of recovering Suzanne from this location,” Olmos Park police said in a statement shared by the missing mother’s family.

“Evidence, statements and a robust police investigation led us there,” the department said, without elaborating.

The mother of four has not been seen or heard from since Oct. 6, when a neighbor heard her screaming in the woods outside her Olmos Park home.

Suzanne’s husband of 22 years, 53-year-old Brad Simpson, was arrested last Wednesday and charged with assault, family violence and unlawful restraint. He remains incarcerated in the Bexar County Jail Friday on a $2 million bond.

The missing mother’s brother-in-law, Barton Tinsley Simpson, said the family was “so grateful for the endless, exhausting hours” that police were “committed to uncovering solid information.”

“We take comfort in the fact that they may be close to finding out what happened to Suzanne.”

Simpson’s family no longer believes she is alive.

Her mother, Barbara Clark, revealed at a vigil for her daughter Sunday evening that Simpson had called her just an hour before she disappeared and told her that Brad had been physically abused, causing injuries to his arm and back.

“She called me and told me what Brad had physically done to her,” Clark said, suggesting the violence was “alcohol related.”

“I came up with an alternative plan for her that she would move in with me and have her little toddler go to the elementary school in my neighborhood,” Clark said, complaining that she “never got to tell her the plan.”

According to police, a neighbor witnessed a physical altercation between Suzanne and Brad between 10 and 11 p.m. that same evening. Brad was “clearly trying to stop Ms. Simpson from running away,” the neighbor told investigators.

The man said the couple went into the forest together. Minutes later, when he went outside to investigate, he heard “two to three screams” coming from the darkness and ran back into the house.

About an hour later, Brad left the house in his pickup truck and returned two to three hours later, the neighbor said.

Brad initially reported Suzanne missing on Monday – but has been uncooperative with law enforcement as the frantic search for his wife continues.

Notably, her phone was also not recovered – a key piece of evidence that, according to retired FBI special agent and Project Absentis executive Abel Pena, could blow the case completely.

“The big thing will be digital evidence,” he told News4SA on Tuesday. “If they find their cell phone there, it would be a great find. They can probably put together a better schedule from there.”

The couple has two children together and Suzanne has two more from a previous relationship, officials said.