Director of the project promoter Prime Shristi Housing Pvt. Ltd. M Balagurusamy and construction engineer K Karthik, against whom the police had launched a manhunt, were arrested by the SIT, a city police release said.
Balagurusamy is a relative of the company's Managing Director M Manoharan, it said.
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Chief Minister Jayalalithaa had on July 6 announced the setting up of the SIT. The government had earlier ordered a one-man inquiry commission headed by retired Madras High Court Judge R Raghupathy to probe the circumstances that led to the mishap that also left 27 persons injured.
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