A journalist in Northern Ireland received a death threat, the Belfast branch of the National Union of Journalists has said.
Dissident republicans are believed to be behind the intimidation.
The NUJ Belfast branch has called for politicians and community leaders to use their influence to have the threat withdrawn.
"We are concerned with the growing number of threats being made by paramilitary groups in Northern Ireland against journalists who are carrying out their work," a spokesman said.
"We call on those responsible for the latest threat to lift it and to publicly say so."
It is understood the PSNI relayed information to the reporter that their life was in danger.
The identity of the journalist is not being revealed.
A police spokeswoman said they could not comment on the security of individuals.
She said: "We do not discuss the security of any individual. However, if we receive information that a person's life may be at risk we will inform the relevant persons accordingly.
"We never ignore anything which may put an individual at risk. No inference should be drawn from this."
There has been a history of violence and intimidation against journalists in Northern Ireland.
In January, during the violent loyalist protests over the Union flag dispute at Belfast City Hall police intercepted a letter containing a bullet that was addressed to a reporter.
Last August, the Ulster Defence Association was blamed for issuing a death threat against another Belfast journalist whose name was daubed in graffiti on a wall.
Sunday World reporter Martin O'Hagan was shot dead in 2001 by the Loyalist Volunteer Force, a splinter group of the Ulster Volunteer Force in Lurgan.