(CNN) -- An Iowa woman was charged with attempted murder after running over a 14-year-old girl, saying she did so because the teenager "was a Mexican," police said.

Nicole Marie Poole Franklin, 42, was arrested on other charges and Thursday admitted to Clive police she hit the girl with her vehicle on December 9, according to a news release from the Clive Police Department. Clive is about 9 miles from Des Moines.

The girl was walking to Indian Hills Junior High when a vehicle drove onto the sidewalk, ran over her and left the scene, the release said. Officials say the girl was able to return to school one week after the incident, according to CNN affiliate WOI-TV.

During her interview with detectives, Poole Franklin, a Des Moines resident, said she was the driver and intentionally struck the girl because she "was a Mexican," police said. Poole Franklin then "made a series of derogatory statements about Latinos," police said.

Authorities are looking at whether Poole Franklin running the girl over was a hate crime, Clive Police Chief Michael G. Venema said during a news conference.