Placer County sheriff's detectives didn't have to go far to arrest and book their latest suspect -- he was found in the Placer County Jail parking lot allegedly seeking a sexual rendezvous with a minor.

Daniel Kirschner, 28, of Auburn  became the fourth suspect since February who has been arrested after placing an online ad that was answered by a Placer County sheriff's detective posing as a 13-year-old girl.

Detectives said in Kirschner's case, he placed an ad seeking a girlfriend on a popular website. He did not stop corresponding when the "girl" told him she was 13.

Kirschner was booked on charges of communicating with a minor for purposes of committing a sexual act and attempted lewd and lascivious acts with a child under the age of 14.