Police investigate a threat of mass murder against Trump supporters - from a tweet

Washington D.C. Metropolitan police confirmed Tuesday that they are investigating a threat of mass murder against supporters of President Donald Trump who had assembled at the Trump International Hotel. The threat came in a tweet.

"I am coming with a gun"

The threat was transmitted through a tweet from an account that had the Democratic Socialists of America logo as their avatar. It was in response to an innocuous tweets from Trump supporter Cassandra Fairbanks about the meeting.

"Who is going to the MAGA meetup tonight?" Fairbanks tweeted.

"I am coming with a gun and i expected to get numerous bloodstained MAGA hats as trophies," read the response from "dreamstarjustic" with a picture attached of a pistol.

The tweet was deleted and the account closed down, but screenshots were available on social media.

The Daily Mail reported that police department spokesman Hugh Carew indicated they were reporting the threat but did not have further information on how they responded to the tweet.

The account reportedly retweeted messages from left-wing firebrand candidate Alexandria Ocasio-Cortez and Senator Bernie Sanders (I-Vt.).

Fairbanks later tweeted that the "MAGA meeting" was not cancelled.

"Great turnout at the MAGA meetup tonight despite the threat!" she said.

On Saturday, Rep. Maxine Waters (D-Calif.), a frequent and vocal critic of the president, joked to an audience that she often threatened Trump's constituents and his supporters. Some criticized the congresswoman for statements they said were encouraging violence against Trump and his supporters.