At 9:55 am a call went out from a school police officer on the radio to Harris County Units initiating an active shooter alert at the campus. Units from basically the immediate and surrounding areas responded. SWAT and Air Support was requested. Within about 10 minutes units were told to slow down that one person with a weapon was in custody. But possibly one other person still in school or area. The school was checked and no suspect was found. Units are still searching the area. The school was immediately put on lock-down. Many students called their parents, several more posted on social media. Parents rushed to the school to pick students up, however, this made it difficult for additional units responding and a search is being done of the outside area due to the crowd. The all-clear was given and parents are now being allowed to pick up their children. Officials have not found a second person and are not 100% sure there was another. No shots were fired during the incident. They are doing a briefing shortly.