A person of interest in the 1996 disappearance of 19-year-old college student Kristin Denise Smart was detained on Wednesday morning by the FBI and deputies in San Luis Obispo, California, according to KABC. The man, identified as former classmate Paul Flores, was held for a time.

Deputies played it close to the vest in a new statement, saying they’re only publicly commenting in order to avoid the spread of misinformation, and that they don’t anticipate any more news releases on the case. Investigators announced they executed search warrants at four locations. There’s two in San Luis Obispo County and one in Los Angeles County, California, and one location in Washington state.

“The search warrants are limited in scope, and sealed by the court,” deputies said. “As a result, we are precluded by law from disclosing any further details about them.”

The FBI says that Smart, a student at California Polytechnic State University, was last seen at about 2 a.m. on May 25, 1996. She was walking back to her to her dorm room from an off-campus party while accompanied by a fellow student (Flores). According to the FBI, that student said he left Smart a block from her Muir Hall dorm, and he returned to his building. Smart didn’t return home, authorities said.

Flores was interviewed back then, but cut short a recorded police interview after admitting he lied about how he got a recent black eye, according to The San Luis Obispo Tribune. First he reportedly had said he got it playing basketball, then he said he sustained it while fixing his truck.

Smart’s family sued him in November 1996 for the wrongful death of their daughter, but long story short; that went no where: Flores invoked the Fifth Amendment during a 1997 deposition in that case.

“Smart was last seen wearing a grey half T-shirt, black surfing shorts, and red ‘Puma’ athletic shoes,” said the FBI. “Her hair is straight and shoulder length.” Officials described her as white, with dark blonde hair, and brown eyes. Smart stood 6’1″, and weighed 145 pounds.

[Image via Federal Bureau of Investigation]