The Department of Homeland Security (DHS) issued a national terrorism bulletin Wednesday warning of potential domestic attacks by political extremists.

The bulletin was issued due to “a heightened threat environment across the United States” which DHS believes will persist in the weeks following the inauguration of President Joe Biden.

“Information suggests that some ideologically-motivated violent extremists with objections to the exercise of governmental authority and the presidential transition, as well as other perceived grievances fueled by false narratives, could continue to mobilize to incite or commit violence,” the bulletin states.

The alert was issued at 11:00 a.m. on Jan. 27 and will remain in effect until 1 p.m. on April 30.

In the bulletin, DHS encouraged state, local, tribal, and territorial homeland security partners to continue prioritizing physical security measures, particularly around government facilities, to protect people and critical infrastructure.

“We ask the public to report suspicious activity and threats of violence, including online activity, to local law enforcement, FBI Field Offices, or their local Fusion Center,” the bulletin states.

Officials say local, state and federal agencies will provide specific information about emerging threats as additional information is identified.

Wednesday’s alert was issued by acting Homeland Security Secretary David Pekoske. Biden’s nominee for the Cabinet post, Alejandro Mayorkas, has not been confirmed by the Senate.