He has not been charged.Surveillance photo of a man wanted for questioning in a fatal shooting of a robbery suspect.MORE: Domestic violence suspect barricaded inside Spring home sets house on fireThe shooting was reported at a taqueria in the 6800 block of South Gessner Road around 11:30 p.m. Thursday.Police say the restaurant was open and customers were eating when the suspect came in wearing a black ski mask and gloves and demanded money from the patrons.Police at the scene said that the gun may have been plastic, either airsoft or a BB gun, although the investigation was still being conducted."