LAWRENCE, Kan. (AP) — A 38-year-old man who sent hundreds of emails to someone he thought was a 14-year-old girl has been convicted of soliciting sex.

The person he was communicating with was a sheriff’s deputy. Prosecutors say when Michael Henderson of Lawrence showed up with condoms to meet the “child” he was arrested.

Henderson was convicted Wednesday of electronic solicitation of a child. He will be sentenced May 17 and could face up to 20 years in prison.

The investigation started after a resident told police she believed Henderson was trying to meet young girls for sex.

The email conversation, which involved 660 messages, began when the deputy responded to a Craigslist ad.

Henderson’s attorney argued Henderson was entrapped by law enforcement.