One of the accused in the killing of Tamil Nadu's Bahujan Samaj Party chief K Armstrong was killed in an encoutner with the police in Chennai on Saturday evening, said the officials.
Thiruvengadam was taken to the spot to recover weapons used to killed K Armstrong when he fired at the police official with the recovered gun, reported NDTV quoting police sources as saying.
The accused was injured in the retaliatory firing and was rushed to the hospital. "He was declared brought dead by the doctors," officials said, the NDTV report added.
33-year-old Thiruvengadam was taken into custody by Sembiam police for five days on July 11 and was taken to Parangimalai Armed Reserve Station for questioning.
The Tamil Nadu BJP chief was hacked to death by six bike-borne men near his house in Chennai earlier this month.
He was attacked by six men when he was having a discussion with a few party functionarie near his house in the city's Sembium area and then fled. Armstrong was rushed to a hospital by his family, but he was declared brought dead.
At least 11 suspects have been arrested in connection with the matter so far and Thiruvengadam was one of the accused in the case.