"It was taped up with some black electrical tape and athletic tape, and did not have a proper label on it," said Det. Lance Richburg of the Sweetwater Police Department.
Sweetwater PD called in the APD Bomb Squad after a postal employee picked it up at the Nolan County Courthouse and brought it to the post office.
"Once the postal employee began looking at the package more closely, he became concerned and left it in the parking lot," Richburg said.
Police were on high alert Wednesday, just a day after several protesters gathered outside the courthouse.
"There were some hard feelings, and this package was actually placed in a bin at the courthouse," Richburg said.
The road was shut down in front of the post office and several buildings were evacuated in downtown Sweetwater.
"I felt like we were secure, or we would have been notified," said Vicki Pyburn, who lives in Sweetwater.
Once the package was destroyed, the bomb squad found only a cellphone inside.
"It was what we call a success. Makes our truck and our robot very worth the money and the time we spend training with it," said Lt. Gary Bone of the APD Bomb Squad.
The road and post office were reopened shortly after it was determined the package wasn't dangerous.