According to the Suffolk County Police, the man was seen leaving the Smithtown Stop & Shop, located at 291 West Main Street, on June 23.
He left the store at approximately 5:30 p.m. with around $1,000 worth of over-the-counter medicine in tow.
Though a physical description was not provided, a security camera picture that captured the suspect entering the store showed a man with dark hair. He was wearing a black jacket and blue jeans.
The Suffolk County Crime Stoppers are offering a cash reward to anyone who can provide information that leads to an arrest.
Those with information are encouraged to submit an anonymous tip by calling 1-800-220-TIPS, online at www.P3Tips.com, or through the P3 Tips mobile app.
Click here to follow Daily Voice Brentwood and receive free news updates.