Senior Naxal operative Kiran
Kumar and his wife Narmada were detained by Maharashtra police from neighbouring Telangana, an official said Tuesday.
The legislator and four of his security personnel were killed after their vehicle was blown by the rebels.
The Maharashtra police was on the look out for the couple in connection with another attack in Gadchiroli's Kurkheda area on May 1 in which 15 Quick Response Team personnel and the driver of their vehicle were killed.
An official said Kumar (63), also known by alias Kiran Dada, and Narmada, alias Krishna Kumari (60), were members of the Naxals' "state committee" and carried rewards of Rs 20 lakh each on their heads.
He dubbed Narmada a "prize catch" as she masterminded or was involved in the planning and executing of all major attacks on security personnel in Maharashtra and Chhattisgarh, and was on the run for 22 years.
She was in-charge of the Krantikari Adivasi Mahila Sanghatan (KAMS), a front organisation of the proscribed Communist Party of India (Maoist), under the "dandakaranya special zonal committee", the official said.
Kumar, hailing from Vijayawada in Andhra Pradesh, has been underground for over two decades, he added.
(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)