Nairobi, July 20 -- Top supermarkets, including Naivas, Carrefour and Quickmart, have found themselves on the competition watchdog's radar over price cheating amid rising complaints from consumers.

The Competition Authority of Kenya (CAK) investigated the retailers for posting different prices on the shelves from what they were charging customers at the till.

The regulator also covertly investigated the supermarkets for cases of misleading consumers by raising prices on products before discounting them, so it would seem to consumers that the discounts were bigger.

Buyers complained of incorrect pricing at the registry, with the complaints hinged on the sticker prices being lower compared with the product cost at the cashier.

Carrefour...