A Walmart security guard was stabbed as he attempted to stop a shoplifter late Tuesday night.
The incident occurred just before 11:30 p.m. at the Walmart in the 1400 block of Austin Highway.
San Antonio police said the security guard was trying to stop the suspect -- identified Wednesday as Jared Louis Knighton -- when the man pulled out a box-cutter and stabbed the guard in the abdomen.
The guard was transported to University Hospital in serious condition.
Police said Knighton fled on foot to a nearby motel.
SAPD officers searched for Knighton but were unable to find him.
Knighton is considered to be a regular customer and now faces aggravated robbery charges.