"Based on threat information received from Intelligence Bureau and other security agencies, we have issued high alert across Odisha," Director General of Police (DGP) B K Singh told reporters.
Security has been beefed up near key installations, he said, adding security arrangement has been made at the airport, Hirakud Dam and religious places.
All district collectors and superintendents of police have been asked to stay alert and additional security measures have been taken for Maoist-affected districts of the state, a senior police official said.