Adequate lighting arrangements, surveillance cameras and stand-by generators were established in the counting centres and police personnel would be monitoring the security round-the clock, a police release said.
It said elaborate security arrangements had been made for escorting the polled EVMs to the counting centres here and in neighbouring Thiruvallur district.
Control rooms have been set up for coordinating the movement and safe transport of the polled EVMs, it said.
Officers in the rank of Additional Commissioner, Joint Commissioner and Deputy Commissioner visited various sensitive booths, it said.