irving. >> reporter: police later concluded the device was harmless, just a clock as mohamed said all along, and declined to press charges. irving police chief larry boyd denied the teen had been profiled because he was a muslim. >> we live in an age where you can't take things like that to schools. we have seen across our country horrific things happen. we have to err on the side of caution. the reaction would have been the same regardless. >> reporter: but social media exploded in outrage. people posed with clocks in solidarity, the hashtag, "i stand with ahmed" was repeated. facebook founder mark zuckerberg invited him to stop by and 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." >> i didn't think i was going to get and supporters because i was muslim and i didn't think anyone would care about that. >> reporter: mohamed has been invited to the white house next month for an astronomy night to meet with government scientists. he is still serving a three-day