Kumar, who has not been seen in public since Friday evening after the Calcutta High Court withdrew the interim protection from arrest given to him, has failed to appear before the CBI for questioning disregarding multiple notices served by the probe agency.
The CBI sleuths, including men from the special investigation team set up to find Rajeev Kumar, went to the IPS officers' mess in Alipore, Kumar's official residence on Park street as also a five star hotel off the Eastern Metropolitan Bypass.
"We are searching for him," a CBI officer told over phone.
Four Central Bureau of investigation officers drove to 34, Park Street and stayed there for 45 minutes trying to collect information about Kumar.
The large number of policemen standing guard outside the quarters initially had no idea of the CBI officers' presence. But once they came to know of the CBI sleuths's arrival, the cops allowed them in only after checking their identity in detail.
The sleuths' next stopover was the IPS officers' mess where they spoke to the watchmen, staff and searched a number of rooms on the ground and first floors.
Then came the most dramatic part, as the sleuths raided Hotel Vivanta near the Ruby Hospital Crossing. Stopped by the hotel authorities, the CBI officers went in after brandishing their identity cards and made enquiries from the hotel staff.
The sleuths next went into the hotel taking the kitchen entrance and came out after half an hour.
Some moments after the CBI officers entered the hotel, plain-clothes policemen stationed themselves outside the premises.
( With inputs from IANS )