HOUSTON – The Harris County Sheriff’s Office said they found a van caught by flood water from Tropical Storm Harvey that contained the remains of a family of six.

Relatives told KHOU 11 News the family drowned Sunday afternoon while trying to escape the flooding. Four children, ages 16 and younger, and their great-grandparents were found dead in the van late Wednesday morning.

The driver of the vehicle, the children's great-uncle, managed to escape before the van went under water. He told the children inside to try and get out through the back door, but they were unable to.

Family members said the victims are Manuel Saldivar, 84, his wife Belia, 81, Daisy Saldivar, 6, Xavier Saldivar, 8, Dominic Saldivar, 14, and Devy Saldivar, 16.

At least two bodies were found in the van and a dive team is working to retrieve the others. The van was swept away by the current after crossing a bridge on Green River Road in Greens Bayou, witnesses said.