While the jawan was killed in Bijapur district, the woman was injured in the explosion that took place in the neighbouring Dantewada.
"A team of security men was returning after carrying out an anti-Maoist operation when the jawan came under impact of the blast in Farsegarh police station area (Bijapur)," Bijapur Superintendent of Police K L Dhruv told PTI.
The joint contingent of Special Task Force (STF), DRG and police personnel from local police stations was out on the operation since November 5 to the interior forest of southern Bijapur, located around 450 kms from here.
Reinforcement was rushed to the spot and the body of the jawan was being evacuated from the forest, he said.
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In a separate incident, a woman identified as Bhime Madkami (50) sustained serious injuries on legs in the blast near Kondapara village under Aranpur police station limits of Dantewada district.
"The incident occurred while Madkami was in the nearby jungle to graze cattle," a police official said.
According to the officer, CRPF has its outpost close to Kondapara and security personnel often carry out patrolling from the area where blast took place.
Meanwhile, combing operation has been launched in the region to trace the attackers in both the incidents.