FBI, NYPD investigate letter containing white powder sent to Manhattan DA

FBI, NYPD investigate letter containing white powder sent to Manhattan DA

The FBI and NYPD are investigating a letter containing a death threat and white powder mailed to Manhattan District Attorney Alvin Bragg, whose office is investigating former President Donald Trump, according to law-enforcement sources told NBC News.

The source said the letter was addressed to Bragg and said, ALVIN. It contained a small amount of white powder.

There were no evacuations or injuries, officials said.

The NYPD Emergency Service Unit and the NYC Department of Environmental Protection determined there was no dangerous substance, according to the DA's office. The sources said that the envelope had been mailed from Orlando, Florida earlier this week. It was postmarked on Tuesday, the sources said.

The letter came in the wake of Trump announcing that he would be arrested in the probe this past Tuesday and that people should protest. His rhetoric has become more heated in the days since, including warnings on his social media site early Friday of his potential death and destruction if the DA indicts him.

An indictment in the case could come down as there are indications that the investigation is in its final stages. NBC News reported last week that law enforcement officials had already begun preparing security precautions in the event of a possible indictment in discussions that include the NYPD, New York State Court Officers, the U.S. Secret Service, the FBI's Joint Terrorism Task Force and the DA's office.