Atlanta-based Delta Air Lines said it had customers among those killed in the attacks at the Brussels airport.
A statement from the family of Alexander and Sascha Pinczowski -- siblings who lived in New York, according to news reports -- said they learned the two were not among the survivors of the attacks.
"The family would like to thank the Dutch Embassy and Delta Airlines for all of their support in our search in Brussels," the statement from the family says. "We especially thank all of our friends and family, across two continents, for their expressions of love, support and prayers for Sascha and Alex. We ask for continued prayers and privacy during this time of grieving as we await final closure."
Delta said it is assisting families and friends of customers affected by the explosions at the Brussels airport.
“We are deeply saddened by the tragedy in Brussels. On behalf of all Delta people, I extend our deepest sympathies, thoughts and prayers to those who lost loved ones in the March 22 tragedy in Brussels. Delta people are grieving with you,” said Delta's incoming CEO Ed Bastian. “Our teams continue to work around the clock to assist customers and provide assistance to family and friends of Delta customers.”