Texas police are investigating after a semi truck driver is believed to have been dead for several days in the cab of his truck after the load he was scheduled to deliver was stolen.

Houston police say that they were called to a location on 175 McCarty Road around 1 p.m. on Saturday, August 3, where they found an unnamed 48 year old truck driver deceased inside in his truck in an “advanced state of decomposition.”

Police also said that the contents of the trailer were missing.

After investigating, police learned that the truck driver had left a shipping facility in Laredo on July 29 with a load of frozen meat. He was scheduled to deliver the load in Houston on July 30, but he never arrived at his destination.

The owners of the truck had reportedly been searching for the missing driver since he missed his July 30 drop off in Houston.

The Houston Chronicle reports that the Harris County Institute of Forensic Sciences is still working to determine the cause of the man’s death.

If you have information on the incident, you’re asked to call the Houston Police Department Homicide Division at 713-308-3600.