Gunman opens fire in Texas high school, killing up to 10

Santa Fe, Texas • At least one gunman opened fire at a Houston-area high school Friday, killing eight to 10 people, most of them students, authorities said.Harris County Sheriff Ed Gonzalez said he could not be precise about the number of deaths at Santa Fe High School, which went on lockdown around 8 a.m. One person was in custody, and a second person had been detained, he said.An unknown number of possible explosive devices were found at the school and off campus. Authorities were in the