Police officials told PTI over phone from Mizoram-Bangladesh border that Mondal was brought to the Mizoram border early this morning.
"He would undergo thorough medical checkup before proceeding towards Aizawl," the officials said.
Mondal, 25, a survey engineer working with Noida-based Telecom Network Solution, was abducted from Tuipuibari in Mamit district of Mizoram, near Bangladesh border along with two Mizo drivers.
While the two Mizos - Sanglianthanga and Lalzawmliana were released on January 21, Mondal remained in captivity as the abductors continued to demand ransom for his release.