Authorities say a man suspected of killing a Kansas college student who led a secret life as an Internet porn model is appealing his extradition from Mexico.

The Kansas attorney general’s office says a higher court in Mexico will review the case against Israel Mireles. That could take three to four months.

Mireles was arrested in December at a relative’s home in Melchor Muzquiz, Mexico.

He is charged with capital murder, rape and aggravated criminal sodomy in the death of 18-year-old Emily Sander.

The disappearance of the Butler Community College student drew nationwide attention after the discovery that she also was an Internet pornography model named Zoey Zane.