A minivan on Tuesday was found in the search for a 14-year-old who police believe was abducted after school by her father, a convicted sex offender.

The Minnesota Crime Alert Network issued an AMBER Alert Monday night for a Deidre Jeanne Michuda, who is believed to have been abducted by her noncustodial father.

Inver Grove Heights police said Michuda was taken after school and is believed to be with her father, Stephen Michael Michuda, 34, of Inver Grove Heights.

Police responded to a call at 6:15 p.m. to the home where the girl lives with her mother and where Stephen Michuda was living temporarily.

The girl's mother told police Michuda took Deidre sometime between 2:45 p.m. and 3:50 p.m. Authorities don't know whether she went willingly or was taken by force.

Michuda has a prior conviction for a sex offense and a court order prohibits him from having unsupervised contact with the girl.

Michuda and his daughter are believed to be in a green 1998 Chevy Venture minivan, Minnesota license plate GUB-014, with a dent in the driver's side door.

Deidre Michuda was described as mixed Asian and white, 5-foot-2 and 110 pounds with brown eyes and dark brown hair that reaches to the middle of her back. When last seen, she was wearing a dark blue sweat shirt with an embroidered "JMS Marching Band" logo and dark jeans and was carrying a green backpack.

Stephen Michuda is described as white, 5-7, 180 pounds, with blue eyes, brown shaved-short hair and a goatee. Police said he often wears a green Army jacket.

Anyone who sees them is asked to call 911.

Under an AMBER Alert, the state Bureau of Criminal Apprehension releases information about suspected kidnappings of children 17 years old or younger to the news media, law enforcement agencies and businesses.