Federal commanders reintroduced the security restrictions associated with counterterrorism operations in the Shali, Shatoi and Vedeno districts near the Caucasus Mountains in the region.
"Militants are intensifying their activities in the Shali, Shatoy and Vedeno districts of the republic," Interfax reported, citing an official report. "We have received information on terrorist attacks planned against executive authorities and law enforcement officials."
Officials could not be immediately reached for comment.
Chechen President Ramzan Kadyrov declared victory in the war against rebels after the Kremlin lifted security restrictions on April 16.
The Kremlin ordered soldiers into Chechnya in 1999 to end the republic's de facto independence won in a 1994-96 war.
Sporadic fighting has occurred in Chechnya since the counterterrorism operation ended, and gunmen killed three federal soldiers last week.
A Message from The Moscow Times:
Dear readers,
We are facing unprecedented challenges. Russia's Prosecutor General's Office has designated The Moscow Times as an "undesirable" organization, criminalizing our work and putting our staff at risk of prosecution. This follows our earlier unjust labeling as a "foreign agent."
These actions are direct attempts to silence independent journalism in Russia. The authorities claim our work "discredits the decisions of the Russian leadership." We see things differently: we strive to provide accurate, unbiased reporting on Russia.
We, the journalists of The Moscow Times, refuse to be silenced. But to continue our work, we need your help.
Your support, no matter how small, makes a world of difference. If you can, please support us monthly starting from just $2. It's quick to set up, and every contribution makes a significant impact.
By supporting The Moscow Times, you're defending open, independent journalism in the face of repression. Thank you for standing with us.
Remind me later.