A Sam's Club employee in Linden called police Monday after a shopper described a foul odor in the parking lot.
The Star-Ledger of Newark reports police were seen pulling a handgun from the vehicle. The Dodge pickup had a Tennessee specialty license plate with the word "PROTECT" on it.
Linden Police Lt. James Sarnicki tells the newspaper it hasn't been determined whether the death was the result of foul play.