• On Wednesday, a gunman identified as Ian David Long opened fire and killed 12 people at Borderline Bar & Grill in Thousand Oaks, California.
  • One of the people killed was a freshman at Pepperdine University named Alaina Housley, who was the niece of “Sister, Sister” star Tamera Mowry-Housely and her husband, Adam Housley.
  • Mowry-Housely and Housley posted on social media Thursday morning in an attempt to determine the whereabouts of their then missing relative.

“Sister, Sister” actress Tamera Mowry-Housley and her husband, Adam Housley, have confirmed that their niece, Alaina Housley, was killed in the Thousand Oaks shooting.

“Our hearts are broken. We just learned that our niece Alaina was one of the victims of last night’s shooting at Borderline bar in Thousand Oaks,” the couple said in a statement to USA Today via their joint representative, Chantal Artur.

Alaina Housley was a freshman at California’s Pepperdine University. She was present at the bar on Wednesday night when a gunman named Ian David Long opened fire and killed 12 people. In a press conference on Thursday morning, Ventura County Sheriff Geoff Dean said authorities believe Long shot himself after the massacre. According to police, the gunman used a single handgun.

Read more: What we know about the Thousand Oaks shooter, identified as Ian David Long

Prior to learning of the death of her nice, Mowry-Housley was communicating with Housley's roommate on Twitter. She initially spotted a tweet from the roommate saying Housley was still unaccounted for, hours after the shooting.

Adam Housley later posted a tweet saying, "Staying positive and praying and hoping and wishing there was more I could do."

Mowry-Housley's twin sister, Tia Mowry, also reached out to followers, asking for anyone with information to reach out.

The mass shooting in Thousand Oaks marks the 15th-deadliest shooting in US history.

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