The incident happened at Wall and 23rd streets, just south of the 10 Freeway around 9:30 p.m.
The exact details of the confrontation were not immediately available, but a body covered by a sheet was visible at the ground.
There were no reports of any officers being injured.
Officers established a perimeter at the scene and appeared to be searching for other suspects.
A line of officers with guns drawn approached a car parked in a back alleyway that had a door open, but they did not find any suspects in the vehicle.
DEVELOPING: This story will be updated as more details become available.