NAMPA (KTVB) -- Three people have been charged with aiding and abetting murder in connection to the case of a Nampa woman who has been missing since Thursday.

Jose Cruz Flores, Daniel Franscisco Sena and Jorge Luis Garcia were arrested Wednesday night. All three men are charged with aiding and abetting murder, and failure to notify authorities of a death. Flores and Sena are also charged with destroying evidence.

Police asked for help finding Selena Dawn Thomas, 36, after determining she left her home under "suspicious circumstances" leaving her keys, purse and car behind.

Nampa Police Sgt. Joe Ramirez said Thomas' disappearance was no longer a missing persons case.

"Our investigators have been working on this diligently for the past few days, and some of their leads did get us to this location," he said. "This is now a homicide investigation."

Nampa Police have a crime scene set up in a field off of Can-Ada Road and Butte Road, south of Melba. Investigators at the scene have declined to say what they found there. A section of the cornfield next to the road and a small irrigation ditch was blocked off with orange cones.

Ramirez said several breaks in the case led them to the field in rural Canyon County.

"Based on detective leads, we learned that she may not still be alive, so we ended up here based on some of their tips," he said.

Police first arrived at the field at about 6 p.m. Wednesday. The three suspects are held in the Canyon County Jail.

Also in the jail is Thomas' boyfriend, 39-year-old Alfredo Martinez,who turned himself in the day after police asked the public to keep an eye out for him in connection with the missing woman. He has not been charged in connection with the murder.

Martinez is charged with violating his parole.

Ramirez said he plans to meet with detectives at 8 a.m. to get more details on the case, and additional information will be released this morning. Investigators will continue to comb through the field.

"This is a very extensive-type crime scene, so we have to be very careful about how we collect evidence. We're taking our time on this," he said. "We want to do the best work we can for Ms. Thomas' family."

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