While the family has not provided further details on the toddler’s death, the Frisco Texas Fire Department previously confirmed to E! News it responded to a drowning call involving the Walker family, but declined to provide further information.
Laura and David—who also share sons Beckham, 10, and Chamberlain, 7—thanked fans for their support shortly after Callahan’s passing.
“We are humbled by the love and support of this community,” they wrote on Instagram Stories Feb. 18. “Thank you for your love, messages and prayers for the whole family. We cannot tell how grateful we are and how they are helping carry us through the impossible. With all our love and appreciation, Laura & David.”