The ex-husband of a missing Florida woman has accepted a plea deal in exchange for disclosing the location of the missing woman's body, the Martin County Sheriff's Office said Thursday night.

In a statement posted to its Facebook page, the Martin County Sheriff's Office said, "Today Steven Williams, former husband of Tricia Todd, plead no contest to 2nd degree murder. He will receive 35-years in prison. As part of the plea deal, he agreed to lead MCSO and members of the state attorney's office to the site of Tricia's body located deep inside the Hungryland State Preserve off of Pratt Whitney Rd."

The post, which includes video of teams searching the area, continued, "At this hour, Sheriff William Snyder, MCSO detectives, forensic teams, members of the state attorney's office, and MCFR are on scene to begin excavating a specific site. We will be working through the night, and will update everyone as we can."

Williams, 30, was arrested on second-degree murder and child neglect charges, Martin County Sheriff William Snyder said Wednesday at a press conference.

During a news conference Wednesday morning, Martin County Sheriff William Snyder said Williams confessed to killing Todd in April. The Air Force airman was arrested Tuesday in North Carolina.

She was last seen at a Publix supermarket on April 26 and reported missing the next day.

Snyder says Todd's 2-year-old daughter was there when her mother was killed. She is now living with family members.

It is unclear whether Williams has a lawyer.