Vito LaPinta of Tacoma, Wash., said he posted a message on Facebook after Usama bin Laden's death, saying Obama should be careful of possible retaliatory acts against him by other terror members, according to the station.
"I was saying how Usama was dead and for Obama to be careful because there could be suicide bombers," the boy told the station.
A week later, the boy said a man walked into Truman Middle School "with a suit and glasses and he said he was part of the Secret Service."
"He told me it was because of a post I made that indicated I was a threat toward the president," he said.
The boy's mother, meanwhile, says she's not happy her son was questioned by Secret Service without her knowledge or consent, the station reports.
"I just about lost it," Timi Robertson told the station. "My 13 year-old son is supposed to be safe and secure in his classroom and he's being interrogated without my knowledge or consent privately."