By Liz Hampton and Erwin Seba
SANTA FE, Texas, May 18 (Reuters) - A male student entered a Texas high school on Friday and shot dead at least eight people, including fellow pupils, officials said, just three months after a similar massacre in Florida sparked a youth-led "Never Again" gun-control movement.
Students said a gunman opened fire in a classroom at Santa Fe High School shortly before 8 a.m. CT (1300 GMT) on Friday, and that they fled in panic after seeing classmates wounded and a fire alarm triggered a full evacuation. At least nine people were injured.
It was the latest in a long series of deadly shootings at U.S. schools. Seventeen teens and educators were shot dead at a Parkland, Florida, high school in February, a massacre that stirred the nation's long-running debate over gun ownership.
Harris County Sheriff Ed Gonzalez said that eight to 10 people, both students and adults, died in the incident at the school about 30 miles (48 km) southeast of Houston.
"There is one person, a suspect, in custody and a second possible person of interest that is detained and being questioned," Gonzalez said at a news conference.
One of the two people detained is Dimitrios Pagourtzis, according to a law enforcement source who spoke on condition of anonymity because he was not authorized to publicly discuss the investigation told Reuters.
Explosive devices had also been found at the school and off campus, Gonzalez tweeted. "Law enforcement is in the process of rendering them safe."
The gunman was armed with an AR-15 assault-style rifle, a shotgun, a pistol and pipe bombs, the Houston Chronicle reported, citing an unnamed senior law enforcement official.
At least nine people were taken to area hospitals for treatment,
