Security forces were on alert following a tip-off on Maoist movements expected in the vicinity since Friday night. The gunfight was sparked off after a police party engaged in combing operations in the area came under attack from the rebels.
Six Maoists were gunned down by the commandoes of C-60 battalion, the official said.
Their bodies have been recovered by the security forces, but their identity has not yet been revealed.
A search of the area also revealed a significant arms cache, which included one carbine, one .303 gun, three home-made rifles, several hand grenades and other items.
Around 170 km from Nagpur, Gadchiroli in eastern Maharashtra's Vidarbha region is one of the worst Maoist-affected districts in the country.