Police are looking for a man they say punched an elderly man inside a subway station early Tuesday morning.  

The attack happened just after 1 a.m. inside the Dekalb Avenue subway station.  

Police say a 72-year-old man was standing near the turnstiles when the man approached him.  

The man punched the 72-year-old knocking him onto the ground.  

The 72-year-old refused medical attention for his injuries.  

Anyone with information is asked to call the NYPD Crime Stoppers hotline at 1-800-577-TIPS (8477).