Powder incidents reported at three N.Y. locations

The New York Police responded to three suspicious powder incidents over the course of 24 hours on Monday and Tuesday, including incidents at the Guggenheim Museum, P.S. 290 Manhattan New School and the Neue Galerie.

On Tuesday, police were called to the Guggenheim and P.S. 290 on the Upper East Side due reports of mysterious substances. In both cases, the powder was enclosed in letters mailed to the addresses. The powder's makeup was undetermined at the time of the report, Gothamist reports.

The substance at P.S. 290 was later determined to be harmless, DNA Info reports. The package at the Guggenheim was localized in the museum's cafe at approximately 12 p.m. The eatery was open and safe approximately four hours later.

Another incident occurred on Monday at the Neue Galerie, a museum devoted to German and Austrian art and design from the twentieth century, in which a powder was received in the administrative offices. The powder in the incident was also later found to be harmless.

According to the Centers for Disease Control and Prevention, anthrax is caused by the spore-forming Bacillus anthracis bacterium. Early treatment with antibiotics can cure cutaneous anthrax, which is when anthrax comes into contact with the skin. Gastrointestinal and inhalation anthrax are more severe.