Federal authorities say an Ohio seminary student has been arrested in California on suspicion of intending to travel to Mexico to have sex with a toddler or baby.

Immigration and Customs Enforcement said in a statement that 23-year-old Joel Wright was taken into custody after getting off a plane in San Diego.

Authorities say he had written emails to an undercover agent posing as a travel guide that he wanted to adopt or purchase a female child under age 3 in Tijuana, Mexico, for the purposes of having sex with her.

He's scheduled to be arraigned Monday, and an after-hours call to determine whether he has an attorney wasn't immediately returned.

Wright attends Pontifical College Josephinum in Columbus. A school spokesman, the Rev. John Allen, tells the Columbus Dispatch they are "shocked and saddened" at the "reprehensible" allegations. Wright has been expelled.