They said CCTV recordings obtained from a commercial centre in the area helped to nab the culprits who hacked to death Balasubramanian alia Singaram when he was being escorted to Tuticorin in connection with a bomb hurling case at Morapanaadu.
The assailants had used vehicles with Lawyer stickers.
They seized two sickles, knives and iron rod from the vehicles.
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