A 30-year-old man who threatened an elderly man in a Rite Aid parking lot in Michigan was warned once by the 91-year-old that he was carrying a concealed weapon, and that he should stay away.

Clearly, he is a slow learner.

A robber in Michigan picked the wrong target.

Eastpointe police said a 91-year-old man shot a would-be robber in the parking lot of a Rite Aid pharmacy Monday morning.

According to WJBK, the 91-year-old had pulled into the pharmacy’s parking lot around 10:15 a.m. Monday and said he began to feel uneasy when the man – later identified as Richard Ashford – walked up to him, acting erratically.

The 91-year-old warned Ashford that he had a concealed pistol license, and Ashford walked away.

When the man got out of his car to enter the pharmacy, however, Ashford confronted him again, pulling out an “unknown object” and pointing it at him, police said. The 91-year-old drew his gun and fired, hitting Ashford in the neck.

Ashford fled the scene despite his wound, but police later captured him and took him to a local hospital for treatment.

Authorities charged Ashford with felonious assault.

No charges will be filed against the 91-year-old man according to Prosecutor Eric Smith. If convicted, Ashford faces up to four years in prison for felonious assault.