Maryland: A man who had a long-running feud with an Annapolis newspaper blasted his way through its newsroom with a shotgun today, killing at least five people in one of the deadliest attacks recorded on a US media outlet, authorities said.

The suspect fired through a glass door, looked for victims and then sprayed the newsroom of The Capital Gazette newspaper group in Annapolis with gunfire, Police and a witness said. Acting Police Chief of  Anne Arundel County Police Department William Krampf told a news conference that Capital Gazette Assistant Editor Rob Hiaasen, 59, was among the victims.

Wendy Winters, 65, Rebecca Smith, 34, Gerald Fischman, 61 and John McNamara were also killed, he said. Smith was a sales assistant and others were journalists. The suspect is Jarrod Ramos, 38, of Laurel, The Capital Gazette and Baltimore Sun reported, citing law enforcement.

In 2012, Ramos brought a defamation lawsuit against Eric Hartley, formerly a staff writer and columnist with The Capital, and Thomas Marquardt, then editor and publisher of The Capital, according to a court filing.