By The Associated Press

GRAND RAPIDS, Mich. (AP) — A western Michigan man has pleaded guilty to making a threatening phone call last October to presidential hopeful Sen. Cory Booker of New Jersey.

In a news release, the FBI says that 52-year-old Rick Simmons of Kentwood entered his plea this week in federal court in which he admitted to leaving a profane voice mail message at Booker’s Camden, N.J. office that included a threat to put a gun into Booker’s face.

U.S. Sen. Cory Booker, D-N.J., speaks during a commemorative service Sunday, March 3, 2019, at Brown Chapel AME Church in Selma, Ala. Several Democratic White House hopefuls are visiting one of America’s seminal civil rights sites to pay homage to that legacy and highlight their own connections to the movement. (AP Photo/Julie Bennett)

When Simmons returns to court on June 5 for sentencing he faces a maximum sentence of five years in prison, three years of supervised release and a $250,000 fine.

Booker officially announced last month that he was seeking the Democratic nomination for president.