Rochester, Minn.-based Pump 'N Munch convience stores are in the process of adding an additional four stores to its number, more than doubling its total.

Kato Inc., which owns Pump 'N Munch stations, purchased four of the Rochester BP stations. The company will convert all the stores over to the Pump 'N Munch brand.

Conversion of these four will bring Kato's total number of Rochester stations to seven, according to The Post-Bulletin. Along with the conversion, Pump 'N Munch will sell BP fuel. The company currently carries Conoco fuel, however, Conoco is ceasing supplying to Minnesota on Aug. 3.