James Lawrence Butler III and Michelle Elaine Butler were reported missing on October 23 after family and friends lost contact with them.
Their remains were found Sunday on the island of Padre Beach in Corpus Christi by a deputy of Clleburg County. Jaime Garza's deputy chief told CNN they were buried in the sand.
Their deaths have been set for homicide by the Nueces County Medical Examiner's Office. He did not release information about the cause of death.
"Our heartfelt condolences go out to Butlers' family and friends about the tragic loss of their loved ones," the sheriff said in a press release. [1
The sheriff's office did not find any suspects, but said it would release more information about the case Monday at a news conference.
James Butler's sister, Deborah van Lone, told KZTV this week that she spoke with her brother at 16, and he asked her to show her house to prospective buyers. The couple has traveled the country since June 2018, working part-time, she said.
The couple is from Rumney, New Hampshire.