Police are investigating the death of a man whose body was found in his southwest San Antonio home on Tuesday morning. Officers were called at 8:30 a.m. for a welfare check at a home on Hatton Street near Cupples Road. The homeowner hadn't been seen since Monday. Police found him dead inside the home under "possible suspicious circumstances." The man's cause of death is unknown, and police say there are no known witnesses or suspects. The man's identity hasn't been released.