The conventional wisdom about being a fugitive is that it's best to keep a low profile if you don't want to get caught.

Police say Brent Kellogg did just the opposite on Monday, when he pulled out his laptop and started watching pornography at a McDonald's in Roswell, Ga. He is a convicted sex offender who failed to register as such. That's a violation of his parole, according to Roswell Patch.

WSBTV reports that an off-duty sheriff's deputy saw what he thought might be a lewd image on Kellogg's computer.

The deputy told the restaurant's manager, who told police she saw a picture of a "'young girl,' most likely in her teens, wearing only a bra," according to Patch.

Kellogg fled when police approached him, but he was arrested after a brief chase and charged with obstruction, police said.

The story deeply troubled one of the restaurant's customers, according to MYFOX Atlanta.

"Wherever there's kids, they're gonna be," the customer said. "It frightens me very much for my children's safety."