A gunman has reportedly fired through a glass door at a newspaper in the Maryland capital of Annapolis and sprayed the newsroom with bullets, killing at least four people and injuring several others.
According to the MailOnline, the suspect has been apprehended and no motive is known for the attack at the Capital Gazette newspaper.
Police in Baltimore and New York City have deployed officers to major media outlets as a precaution, authorities have said.
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It is believed that the shooting is being treated as a 'local incident' and not one that involves terrorism. And The Federal Bureau of Investigation is on the scene assisting local authorities.
The MailOnline reported that Phil Davis, who identified himself as a 'courts and crime reporter' at the Capital Gazette, tweeted that multiple people had been shot.
Senior law enforcement officials confirmed with CBS News that the suspect is a white man in his 20s and didn't have identification on him. He is also reportedly refusing to identify himself to authorities but is being held in custody.
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It is also being reported that the suspect used a shotgun.
According to police, first shots were reported at 2:40pm after the shooter entered the Capital Gazette building.
Police, who were on the scene between 60 and 90 seconds after receiving the report, say that the building has been evacuated, and officers are continuing to search.
The New York Police Department said it was beefing up security at New York-based news organizations as a precaution.
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Officer Andrew Lava, an NYPD spokesman, said: "We're deploying units from our Critical Response Command to news outlets throughout New York City. There is no active threat at this time."
Police are checking the building for explosives and whether more than one suspect was involved, Anne Arundel County police spokesman, Lieutenant Ryan Frashure, told reporters.
President Donald Trump has been briefed on the shooting, White House spokeswoman Lindsay Walters said.
"Our thoughts and prayers are with all that are affected," she said.
Featured Image Credit: NBC News