Officers said they saw the Jeep SUV around 7 p.m. near 20th Street West and Avenue P South, and believed it was involved in a previous mischief file.
The licence plate was confirmed stolen, and the SUV was found parked nearby. Police questioned the driver and passenger and saw a firearm inside the vehicle.
Both people were arrested, and further investigation led to the seizure of an AR-styled .22 caliber firearm, ammunition and spent rounds, an empty magazine, the stolen licence plate and the stolen Jeep SUV.
A 38-year-old man and a 25-year-old woman are facing multiple firearm-related charges and charges related to possession of stolen property.
The man was also found in violation of several court imposed restrictions.