STEVE DOOCY: You know that Texas teenager we've been telling you about, detained in school after officials looked at his homemade clock, thought it might be a bomb. Reportedly has a history of trouble. A former teacher of his shedding some light on his past.

ANNA KOOIMAN: 14-year-old Ahmed Mohammed was personally invited to the White House by the president because of his “cool clock.” But now we're learning the techie teenager may not be as innocent as he seems. The nation did take notice when the Muslim boy was taken out of school when a teacher mistook his invention for a hoax bomb, claiming Islamophobia. But now Ahmed's 7th grade history teacher Ralph Kubiak tells the Dallas Morning Sun this isn't the first time he's been in trouble. Kubiak claims Mohammed was suspended for several weeks during the sixth grade. A family friend says it came from blowing soap bubbles in the bathroom. But Kubiak also claims Mohammed spent time in a reassignment center the following year to complete a punishment. He also says the “weird little kid” would often bring inventions into school, like a homemade remote he used to prank a teenager by shutting off a projector in class. Of Ahmed, Kubiak says he's “one of those kids that could either be CEO of a company or head of a gang.” Kubiak claims he called Ahmed after the clock incident with Ahmed bragging on the phone saying this: “I'm going to be really big on the internet one day.” And Ahmed was right about that. After the clock incident, Ahmed received invitations to Facebook, Google, the U.N., and, as previously stated, the White House. It's unknown if President Obama is aware of his past disciplinary problems in school. But right after the clock incident, the president suggested it could inspire more kids to like science.