Assistant Commandant Nitin Bhalerao, 33, succumbed to injuries suffered in the blast in the early hours of Sunday and nine commandos, were injured.
The orange alert is the second-highest level of alert second only to Red alert which, if issued, would entail closing of schools and restriction on movements in airbases.
The C-60 Force, comprising locals as well as police personnel, was formed to tackle the Naxal menace. Several more troopers were injured and the two vehicles were blown to pieces in the attack.
Searching and combing operations in the entire Gadchiroli district, which has been virtually sealed by the security forces, continues in the jungles, villages, hills and valleys to track and snuff out the Maoists from their hideouts.
However, there was no indication that the massive gold coin had been recovered.
Two armed Maoists were arrested by a patrol team of CRPF and C-60 Commandos near Gaddapalli village in Gadchiroli of Maharashtra.