A Texas man has been arrested as investigators search for his wife, who was reported missing on Sunday.

Suzanne Clark Simpson, a realtor from the affluent San Antonio suburb of Olmos Park, was last seen at around 11 p.m. Sunday, KSAT reported. She had previously been seen at The Argyle, a private club in Alamo Heights, between 6 p.m. and 9 p.m.

“As we speak right now … it’s ongoing. The search will continue as long as it takes,” Olmos Park Police Sergeant Deon Cockrell said.

Clark Simpson’s husband, 53-year-old Brad Simpson, was booked into the Kendall County jail early Wednesday morning on charges of assault causing bodily injury-family violence and unlawful restraint. Olmos Park Police told WOAI the charges were unrelated to Clark Simpson’s disappearance.

The mother of four is described as 5 feet 5 inches tall and about 140 pounds with brown hair and hazel eyes. She was last seen wearing a black, knee-length dress and black heels.

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[Featured image: Suzanne Clark Simpson/Olmos Park Police Department and Brad Simpson/Kendall County Sheriff’s Office]