A Robstown man was arrested by police last week after an officer found drugs and a loaded, unlicensed handgun in the suspect's possession.

K-9 Officer Leo "Bo" Champion said he pulled over a vehicle driven by 66-year-old Jose Saenz Sr. for speeding Thursday morning on Avenue A. Once he approached the vehicle, the officer said Saenz's behavior was immediately suspicious.

"When I went to make contact with him, he was just very, very nervous," he said. "Then, when I got him out of the vehicle, he could barely stand."

Champion said Saenz, who is a diabetic, tried to use his illness as an explanation, but Champion said Saenz's behavior left him suspicious.

"Just his demeanor told me it was more than (the diabetes)," he said.

Saenz gave Champion permission to search the vehicle, which he did using his K-9 unit. The animal immediately alerted the officer to the possibility of Saenz having drugs on his person and in the vehicle, Champion said.

Champion said he found one gram of cocaine in Saenz's pocket, adding that Saenz tried to get rid of five grams of black tar heroin by placing it on top of the officer's vehicle while being searched.

"I guess he hoped that I wouldn't see it and it would just fly off the truck when it took off," he said.

Police also found a loaded 9-millimeter handgun, which Saenz was not licensed to carry, underneath the driver's seat wrapped in a rag.

Saenz was placed under arrest and transported to the Nueces County Jail. He is facing two charges of possession of a controlled substance for both the cocaine and heroin, as well as one count of unlawful carrying of a firearm.