8 to 10 people dead and several others injured from a shooting at Santa Fe High School in Texas on Friday, May 18 according to Harris County Sheriff Ed Gonzalez.

Shortly after classes began around 7:30 am CT, shots were fired by a gunman. Police are questioning two suspects, believed to be students.  One is in custody and the other has been detained, said Sheriff Gonzalez according to the Associated Press.

A school police officer was shot, but his condition has not been released. Another law enforcement officer was also injured according to CNN.

The confirmed casualties include nine students and one teacher.

Additionally authorities have identified several explosive devices including pressure cooker-type devices and pipe bombs. Police have found the explosives in and around the school, according to CNN.  Additionally, The Washington Post reports that explosives were also found off campus.  It is currently unknown if any explosives have gone off and police are working to clear the building.