NYPD: Person robbed 7-Eleven, threatened man with machete

The police are searching for a person who committed robbery at a Park Slope 7-Eleven.
According to the NYPD, the person in question entered the store on 5th Avenue and began stealing things from the fridge. They add that a 59-year-old man confronted the suspect, but that man was then threatened with a machete by the suspect. 
No one was injured in the incident.