There were 10 people shot and killed in Friday's shooting at Santa Fe High School in Texas. At least 10 others were wounded.
So far, two victims have been publicly identified: a substitute teacher and an exchange student from Pakistan.
Houston Texans defensive end JJ Watt has offered to pay for the funerals of the victims, according to a Houston Texans spokeswoman.
Here's what we know about those who died:
Cynthia Tisdale was a substitute teacher at Santa Fe High School, her family told CNN. Her niece, Leia Olinde, said the family was notified of her death Friday night.
Tisdale's brother-in-law, John Tisdale, said in a Facebook post Friday night that she was a member of the Anchor Bible Baptist Church in Pharr, Texas.
John Tisdale also said in his post that his sister-in-law's husband, William Recie Tisdale, is "in bad health with a terminal lung disease." The couple has four children.
Cynthia Tisdale's son, Recie Tisdale, told The Washington Post that his mother loved children and teaching.
"She started substitute teaching because she loved to help children," he told the newspaper. "She didn't have to do it. She did it because she loved it."
Recie Tisdale is a police detective in League City, which is 10 miles away from Santa Fe, where the shooting took place.
The Embassy of Pakistan in Washington confirmed on Facebook that Sabika Sheikh, an exchange student, was killed in Friday's shooting.
"Ms. Sheikh was in Texas as part of the Youth Exchange & Study (YES) Programme," the embassy said in a statement to CNN. "Our thoughts and prayers are with Sabika's family and friends. Ambassador Aizaz Chaudhry spoke to the father of Sabika Sheikh expressing heartfelt condolences over the tragic death of his daughter."
Abdul Aziz, Sabika's father, told AFP in Pakistan that he learned of his 17-year-old daughter's death on CNN.
"We are still in a state of denial," he said. "It is like a nightmare. ...There is a general impression that the life is safe and secure in America. But this is not the case."
US Secretary of State Mike Pompeo said Sabika was "helping to build ties" between the US and her native country and offered his condolences to her family and friends.
"Sabika's death and that of the other victims is heartbreaking and will be mourned deeply both here in the United States, and in Pakistan," Pompeo said in a statement.
US Ambassador to Pakistan David Hale tweeted a statement on Sheikh's death.
"This morning, I called the family of Sabika Sheikh and offered my deepest condolences. As an exchange student, Sabika was a youth ambassador, a bridge between our people and cultures. All of us at the U.S. Mission in Pakistan are devastated by and mourn her loss. We will honor her memory."
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