Vandals defaced a highway sign on Long Island by adding three letters, making the sign read "Crooked Hillary," the name President Donald Trump coined for Democratic presidential nominee Hillary Clinton during the 2016 election.

The sign on Sagtikos Parkway in suburban New York City normally designates the exit for "Crooked Hill," but on Wednesday morning, someone reported to the New York State Department of Transportation that three letters — A-R-Y — had been added at the end of the name, Newsday reported.

A sign marking the Crooked Hill Road exit on the Sagtikos Parkway was defaced to “Crooked Hillary,” officials said https://t.co/7KBwLtEuWt pic.twitter.com/JwX2lEIRKq — Newsday (@Newsday) June 15, 2017

A Department of Transportation spokesperson said that "as soon as we were notified about the graffiti ... it was removed."

“Defacing public signs is illegal," the representative said.

Local reports did not say if officials know who is responsible for defacing the sign. The New York State Department of Transportation did not immediately respond to TheBlaze on Friday.

As recently as Thursday, Trump took to Twitter to again refer to Clinton as "crooked."

"Crooked H destroyed phones w/ hammer, 'bleached' emails, & had husband meet w/AG days before she was cleared- & they talk about obstruction?" the president tweeted.

The tweet came as news broke that special counsel Robert Mueller is investigating Trump personally for possible obstruction of justice. Critics of the president say Trump inappropriately intervened in the FBI's investigation into fired White House national security adviser Michael Flynn by telling now-fired FBI Director James Comey, "I hope you can let this go."

Comey said during congressional testimony last week that he interpreted the president's statement about the Flynn investigation as a "directive."