HPD said that around 9:15 a.m., the couple notified them about the apparent human skull and other bones in the 4100 block of Almeda Genoa.
Homicide investigators have the area blocked off to try to preserve the scene.
Detective Michael Barrow told ABC13 the next step is for the medical examiner to collect the remains, take them to a lab and test them to try to identify the person.
Barrow said the bones were clean and had been there a while, confirming they are definitely human remains.
Authorities will now check on any missing person cases in the area.
HPD homicide investigators are responding to a scene in the 4100 block of Almeda Genoa. About 9:15 a.m., a passerby flagged down law enforcement officers to advise apparent human remains had been found near a ditch. No other details at this time. #hounews— Houston Police (@houstonpolice) May 26, 2020