Americans Justin and Stephanie Shults Killed in Brussels Airport Bombings

— -- An American married couple, Justin and Stephanie Shults, who had been missing since Tuesday's deadly terror attacks at the Brussels airport, have been confirmed dead, according to their family and the companies they worked for.

Justin Shults' brother Levi Sutton wrote on Twitter Saturday:

He later wrote about Stephanie Shults:

"At least we know now," Justin Shults' uncle Dale Branam told ABC affiliate WATE Saturday. "But it's still the wrong kind of news that we would want to hear. I was waiting for him to say that he was in the hospital, injured but OK. Then I found out today, all I could do was cry."

The company Justin Shults worked for, Clarcor, which makes filtration systems, said in a statement Saturday: "We have learned today that Justin Shults died in the bombing at Brussels Airport.

We grieve with his family and continue to offer our support as they mourn this unimaginable loss. Justin has been an integral member of our global finance team since May of 2012 and he has lived with his wife, Stephanie, in Brussels since 2014. He will be remembered by his CLARCOR community as an intelligent, kind and loyal friend and employee. Justin will be greatly missed by those who knew him."

Stephanie Shults' employer, Mars Inc., posted a statement Saturday saying: "Today we learned from Stephanie’s family that she and her husband, Justin, were among those killed in the attack on the Brussels airport. We are mourning the loss of our colleague and friend. Our hearts and thoughts are with their families, and with all those who are suffering during this terrible time."

Neither U.S. nor Belgian officials have confirmed that the Shultses were among the 28 civilians killed in the terror attacks.