The Texas high school student who was arrested because of a clock he made for school has been invited to the White House by U.S. President Barack Obama. Ahmed Mohamed, 14, was led away in handcuffs after his school alerted police that he had brought a homemade bomb to school. He was detained for several hours before authorities realised that what Ahmed had made was just a clock. Within hours of his being released, Ahmed's story went viral. The hashtagIStandWithAhmed has been retweeted hundreds of thousands of times. President Obama tweeted: "Cool clock, Ahmed. Want to bring it to the White House? We should inspire more kids like you to like science. It's what makes America great.