Whole Foods Market venues in New Hampshire and Maine are among the locations hit by a nationwide data breach, the company says.

No Whole Foods locations in Massachusetts, Connecticut or Rhode Island were impacted by the credit card breach. The breach affects customers who bought meals or drinks at in-store restaurants or bars, including taprooms.

The company said the venues use a different point of sale system than the main checkout registers and that payment cards used at the latter were not affected. Amazon.com shoppers also weren't impacted by the hack. 

Whole Foods said it is working with a cybersecurity forensics firm and authorities as it investigates the breach.

The company said customers should closely monitor their payment card statements and report any unauthorized charges to their banks.

Affected locations in New Hampshire:

• Bedford (121 South River Rd.): Goffe's Watering Hole

• Nashua (255 Amherst St.): J. Bartlett's Public House

Affected locations in Maine:

• Portland (2 Somerset St.): Somerset Tap House