Seattle-based Amazon Inc. has expanded its one-hour delivery service to the San Diego market, offering one-hour delivery of grocery items to customers of its Prime services.

A company statement said the service, called Prime Now and already available in other major metro markets, includes products from retailers including Sprouts Farmers Market, Sprinkles Cupcakes, Bristol Farms and Northgate Gonzalez market.

Officials said customers can purchase groceries, produce, prepared meals and other items, available in 1- and 2-hour delivery service windows.

In 2014, Amazon began delivering items to select San Diego neighborhoods as part of its AmazonFresh service, with its trucks making same-day and next-day deliveries of groceries and specialty items from locally based stores and food purveyors.

The offerings are similar to nationwide services previously introduced by competitor Google Inc., which announced Nov. 19 that it is expanding its Google Express next-day delivery service to include all of Southern California, including San Diego County. That program provides delivery of items from retailers including Costco Wholesale, Target and Kohl’s.