A suspicious package addressed to former Vice President Joe Biden was found at a post office in New Castle, Delaware, media reported.

CNN and Reuters reported Wednesday that federal investigators were concerned that a package addressed to Biden might have been somewhere in the mail system, The Tribune reported.

CBS reported in a tweet Thursday morning that the package was found at the post office in New Castle and that it was similar to the others sent to former President Barack Obama, 2016 presidential nominee Hillary Clinton, former Attorney General Eric Holder, former CIA director John Brennan, actor Robert De Niro, billionare George Soros and U.S. Rep. Maxine Waters, who had two packages sent to her.

That means the package sent to Biden is the ninth so far targeting Democratic figures and supporters. NBC4 also reported that investigators say they found the package.