A suspect package similar to those sent to CNN and senior Democrats has been sent to a New York restaurant owned by the actor Robert De Niro, US media say.
Citing police sources, NBC said a device had arrived at the Tribeca Grill early on Thursday local time.
If linked to previous packages, this would be the ninth explosive device sent to perceived critics of President Donald Trump this week, according to BBC.
De Niro is a vocal Trump opponent, and once called him "a national disaster".
When the Oscar-winner criticised him at the Tony Awards in June, the president responded by calling De Niro a "very low IQ individual".
The New York Police Department said the restaurant building was empty at the time the suspicious device arrived, NBC reports.
Shortly after the news broke, President Trump appeared to pin the blame on the media, tweeting: "A very big part of the Anger we see today in our society is caused by the purposely false and inaccurate reporting of the Mainstream Media that I refer to as Fake News."
He made no direct reference to the device found at the restaurant, or any of the earlier incidents.
The series of bomb alerts began on Monday, when explosive devices were sent to locations in New York, the Washington DC area and Florida, authorities said on Wednesday.
