Authorities in Arizona arrested a second caregiver on Thursday in connection with the Tuesday disappearance of 4-year-old Oklahoma girl Athena Brownfield.

Officials with the Maricopa County Sheriff's Office arrested 35-year-old Ivon Adams, one of Athena's two caregivers at the time she disappeared, in Phoenix on a charge of acting as a fugitive from justice.

Adams' arrest came on the same day agents with the Oklahoma State Bureau of Investigation (OSBI) arrested his wife, Alysia Adams, on two counts of child neglect.

"The search for Athena continues. The OSBI is following every tip that is received, which are coming in from Oklahoma, as well as other states. In an effort to find clues as to Athena’s whereabouts, the trash service in Cyril [was searched]," the OSBI said in a Thursday press release. "Additionally, analysts are reviewing surveillance video from around Cyril and seeking other evidence that can help locate Athena."

OKLAHOMA AUTHORITIES MAKE ARREST IN MISSING TODDLER ATHENA BROWFIELD'S MYSTERIOUS DISAPPEARANCE

Alysia Adams mugshot

Oklahoma State Bureau of Investigation agents on Thursday arrested Alysia Adams on two counts of child neglect in connection with the disappearance of 4-year-old Athena Brownfield. (Oklahoma State Bureau of Investigation)

Ivon Adams mugshot

Ivon Adams, 35, was arrested in Phoenix on a charge of acting as a fugitive from justice. (Maricopa County Sheriff's Office)

Authorities initially reported Athena missing on Tuesday afternoon after a postal carrier found her 5-year-old sister wandering around alone on Nebraska Avenue in Cyril, Oklahoma, around 2 p.m.

MISSING ATHENA BROWNFIELD: UNCLEAR WHEN OKLAHOMA 4-YEAR-OLD WAS LAST SEEN BEFORE DISAPPEARANCE

Missing Athena Brownfield of Oklahoma

Athena Brownfield, 4, of Cyril, Oklahoma, has been missing since at least Tuesday. (National Center for Missing and Exploited Children)

The postal carrier knew the 5-year-old girl "wasn't where she was supposed to be and notified police," at which point law enforcement realized that Athena was missing, said OSBI public information officer Brook Arbeitman during a Wednesday press conference posted to Facebook.

OKLAHOMA POLICE ‘ACTIVELY LOOKING’ FOR MISSING 4-YEAR-OLD ATHENA BROWNFIELD WITH INFRARED, HELICOPTERS, BOATS

However, a Caddo County Sheriff’s Office deputy on Thursday told FOX 25 Oklahoma City that the girl may have disappeared as early as Jan. 6.

Photo of Athena Brownfield

Athena Brownfield, 4, has been missing since at least Tuesday and authorities are continuing to search for her. (Oklahoma State Bureau of Investigation)

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The agency is asking members of the public "with a residence or business in Cyril that has a video doorbell camera" to go to Family Life Church in Cyril, where a command post has been established, and notify law enforcement, according to a Wednesday press release. 

Anyone with information about Athena's whereabouts is asked to contact OSBI at 405-879-2591 or local police.