Dey, who was working as an investigative editor with Mid-Day, was shot dead by unidentified assailants here.
The Chief Minister today held an emergency meeting at his residence, and took stock of the investigations, official sources said.
State Home Minister R R Patil, Police Commissioner Patnaik, Joint Commissioner of Police (Crime) Himanshu Roy, Joint Commissioner of Police (Law and order) Rajnish Seth and several senior government officers were present at the meeting.
Talking to reporters after the meeting, Home Minister R R Patil said that necessary measures would be taken by the government to protect the journalists.
He also said that special police teams have been constituted to arrest the culprits in the present case. Adequate security will be provided to Dey's family members, official sources said.