Samuel Ramirez-Gonzalez was seen just after midnight at his home in the 7500 block of Avenue E, authorities said.
Ramirez-Gonzalez has been diagnosed with dementia, according to Houston police. He was last seen wearing a black jacket, black sweats, and black shoes.
If you've seen Samuel Ramirez-Gonzalez, call the Houston Police Dept. at (713) 884-3131 or the Houston Police Missing Persons Division at (832) 394-1840.