The arrested suspects have been identified as Abdul Shameem (29) and Taufeeq (27), both hailing from Thiruvithancode near Nagercoil in Kanyakumari district of Tamil Nadu, they said.
Personnel belonging to the Tamil Nadu 'Q' branch, which handles matters related to extremists and involving national security, took the duo into custody.
Two unidentified men had shot at Special sub-inspector Wilson using a pistol and stabbed him when he was on duty at the Kaliyakavilai checkpoint in Kanyakumari on the border with Kerala around 9.30 pm on January 8.
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