Airport sources said JCO Vijayakumar (45) was coming to his residential quarters after a walk, when Arumugham (45), Head Constable, attacked him with a knife, alleging that the JCO was behind his transfer to Delhi.
Vijayakumar sustained cut injuries below his right knee and was treated as out-patient at the Chromepet Government Hospital.
On hearing the cries of Vijayakumar, people in the quarters nabbed Arumugham and handed him over to the airport police.
There had been differences of opinion between the two and Arumugham was under suspension for the last eight months. A couple of days back, the suspension was revoked and Arumugham was transferred to Delhi.