SAN MATEO, Calif. (KGO) -- On Friday morning, we heard from the college student who helped investigators arrest a San Mateo police officer accused of preying on a minor.
Officer Robert Edward Davies is accused of trying to set up a sexual encounter with a 16-year-old girl on Snapchat. But it was not an underage girl, it was a college student posing as a teen.
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The college student named "Ethan" spoke to "Good Morning America."
RELATED: San Mateo police officer accused of trying to set up sexual encounter with 16-year-old
"I found out that with the gender filter, I made me a very pretty girl so I decided to take advantage of it and try to make a tinder account to capture pedophiles. He asked me to tell him about myself. So I told him, my name is Ester, as you know, and I'm 16 and I like comic book movies and Star Wars."
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A criminal investigation lead to Officer Davies' arrest.
He was charged with contacting a minor to commit a felony.