ZACHARY (WBRZ)  - Three teens are in police custody after victims snapped their pictures prior to a bait and switch at a neighborhood park.

A couple from Baton Rouge shopping on Craigslist found an iPad for $180 and responded to the ad, Zachary Police Chief David McDavid said. 

According to him, the parties were set to meet at a fast-food joint in Zachary but the meeting spot change to the Rollins Road Park at the last minute.

"While they were here, they began to get very uneasy and they started taking pictures of the individuals walking up to the vehicle," McDavid said.

Police say instead of swapping cash for the iPad, the three young men robbed the couple at gunpoint and took their $180.

The suspects did not take the phone, and police used the picture to ask those near the park if they knew who the three were.

"The individuals that were arrested live within a mile radius here," McDavid said. "We arrested two adults and one juvenile."

Police arrested a 15-year-old, Kristopher Marshall, 18, of Zachary, and Shedrick Williams, 18, of Zachary.

Officers said each were pictured in the victim's photo.

Police did not recover the alleged gun used in the robbery.

All three remain in police custody.