Anthony Boyce, 57, is charged with aggravated assault with serious bodily injury for the incident that happened on Friday in the 1400 block of FM-1960 West. Boyce was booked into the Harris County Jail.
Deputies identify the victim as 80-year-old Earl Hollins, who remains in critical condition.
Court documents reveal that Boyce struck Hollins during an argument about a parking spot.
Authorities say the motive is not believed to be a robbery.
According to Gonzalez, the two men were acquainted before the incident took place.
SEE PREVIOUS STORY: Victim in his 80s hospitalized after suffering head injury during robbery attempt, HCSO says