Former Teacher: Orlando Nightclub Gunman's Wife Had 'Difficulty' Understanding Things

PHOTO: Orlando shooting suspect Omar Mateen is pictured with his wife, Noor Zahi Salman, and their son in an undated Facebook photo.PlayFacebook
WATCH Excerpts of Orlando Nightclub Shooter's Calls with Police Released

The wife of the Orlando nightclub shooter had learning difficulties when she was in middle school and was enrolled in special education classes, according to her now retired teacher in California.

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Susan was Noor Zahi Salman's teacher at her middle school in Crockett, California. ABC News is not using Susan's full name or showing her face at her request.

"Noor had difficulty with retention. She had difficulty with conceptualizing, understanding — all challenges to her," Susan said. "She tried hard. She was very sweet."

Her family confirmed that Susan was Salman's special education teacher and that she was enrolled in special education classes.

Susan said Salman was considered a "special day class student" — meaning she had to take all her classes with special education teachers.

Salman's family released a rare statement to ABC News after confirming she was a special education student. She is currently under investigation by the FBI for possible links to her husband's killing of 49 people at an LGBT nightclub in Orlando June 12.

"Noor is completely innocent and [was] unaware of the attack," the statement said, adding that she doesn't understand "cause and effect." The family said Salman was enrolled in special education classes because she needed extra help in school.

Omar Mateen and Salman, now 30, were married in September 2011 after meeting online.

The FBI investigation is ongoing.