U.S. Transportation Security Administration officials spotted the bag carrying the suspicious item around 4:30 a.m. CDT (0930 GMT) as it was going through an X-ray machine at William P. Hobby Airport, said Bill Begley, a spokesman for the Houston Airport System.
Travelers were immediately evacuated, Begley said. The Houston Police Department bomb squad investigated the object.
"It turns out that it was a novelty grenade that a young person had packed in their bags but we didn't know that, so immediately the protocols were put in place," Begley said in a phone interview.
Details about the adults and child involved were not immediately available. Houston Police Department officials did not immediately respond to requests for comment.
Begley urged passengers to review TSA guidelines on what can be carried in luggage, saying, "They can help us greatly by understanding what they can and cannot pack in a bag.
(This story has not been edited by NDTV staff and is auto-generated from a syndicated feed.)
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