Police in Las Vegas say a threatening note addressed to Republican U.S. Sen. Dean Heller was discovered by officers responding to a report of a burglary.
Police declined to release the contents of the letter found Sunday morning near the door of Heller’s office.
Police said Monday patrol officers responded to the building where Heller’s office is located after an alarm company reported a burglary alarm. Police say neither the building nor Heller’s office was burglarized.
The case remains under investigation.
Heller’s office didn’t immediately respond to a request for comment.
No information has been released regarding potentially suspects.
Heller is regarded the most endangered GOP incumbent senator in next year’s midterm elections. He is the only one running for re-election in a state President Donald Trump lost to former Democratic presidential candidate Hillary Clinton.
The Associated Press contributed to this article.