Prices of Phillip Morris-made brands went up by nine cents a pack on Friday. The brands include Marlboro cigarettes.
The move follows a price increase by tobacco company Lorillard, who hiked its Newport menthols by five cents a pack and non-menthols by 11 cents a pack.
Reynolds tobacco, the manufacturer of Camel cigarettes, is considering whether it will follow suit.
Analysts report the price hikes are due to a decline in demand for cigarettes.
