By Jonathan Dienst and Tim Stelloh -
NBC News
The Manhattan District Attorney, whose office is investigating former President Donald Trump,
has received a second threatening letter containing white powder
, two senior law enforcement officials revealed Wednesday.
The most recent envelope sent to prosecutor Alvin Bragg included a letter using an offense to describe the official's body weight and a powder, which authorities determined was not dangerous, the sources said.
A photo of Bragg and Trump was also in the envelope, the sources added.
The New York Police Department was called to investigate.
Alvin Bragg, District Attorney for Manhattan, New York.Getty Images
Additional details about the apparent threat were not immediately available.
The incident marks the second time in less than a month that Bragg has received a threatening tasting and white powder.
In March, a letter with a death threat and this powder was sent to his office.
"
ALVIN
: I'M GOING TO KILL YOU!!!!!!!!!!!!!" the letter read.
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At the time, a senior law enforcement source said Bragg had been the subject of "several hundred" threats.
"A couple of dozen of them were considered direct serious threats," the source said.
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On April 4, Trump pleaded not guilty to 34 counts of falsifying business records related to his role in secret payments to two women made toward the end of the 2016 presidential campaign.
Bragg's office accused Trump of "repeatedly and fraudulently" falsifying records to hide information from voters that could be harmful to his election campaign.
Trump has denied the allegations, saying the only crime he committed was "fearlessly defending our nation from those who seek to destroy it."