From The Hill:

“The Office of New York State Attorney General Letitia James has launched an investigation related to the National Rifle Association (NRA),” Kelly Donnelly, a spokeswoman for the attorney general, said in an email, according to The Associated Press. “As part of this investigation, the Attorney General has issued subpoenas.”
The Times added that James on Friday instructed the NRA and its affiliated entities to preserve all relevant financial records as part of the probe. The NRA’s charitable foundation was reportedly one of the affiliated entities to receive the instructions.