28 others were also wounded in the attack.
A military source said troops of the Special Army Super Camp 4 were advancing on foot in Shimfida in Jibia Local Government Area of Katsina State at about 6pm on Saturday when the armed militants opened fire on them from a hilltop.
The source said the officers killed in the attack included a major, a captain and a lieutenant.
Two bandits were also injured in the exchanges.
The Army spokesperson, Sagir Musa is however yet to confirm the report.
