Minnesota Gov. Mark Dayton collapsed and hit his head on a lectern Monday night while speaking  at his seventh annual State of the State address
Mark Dayton
Credit: Jim Mone/AP

One day after collapsing in the middle of his State of the State address, Minnesota Gov. Mark Dayton revealed Tuesday that he has been diagnosed with prostate cancer.

Dayton, 69, shared the news at a press conference after outlining his budget proposal, saying that the cancer had “extended beyond the prostate.”

He added that he would be going to the Mayo Clinic in Rochester, Minnesota, Tuesday afternoon “to determine the best course of treatment, which will probably be either surgery or radiation.”

Dayton said that he will start undergoing treatment next week and that he plans to finish the last two years of his current term but will not seek re-election.

Dayton, who turns 70 this Thursday, collapsed and hit his head on a lectern Monday night while speaking at his seventh annual State of the State address. Video of the moment showed the governor slurring his speech and appearing to faint.

Legislators rushed to Dayton’s side and, after spending several minutes on the ground, he walked out of the chamber with assistance.

Credit: Glen Stubbe/Star Tribune via AP

“Tonight, Governor Dayton briefly fainted after speaking for about 40 minutes,” his chief of staff, Jaime Tincher, said Monday night in a statement released on Twitter.

“He quickly recovered, walked out of the Capitol, and returned home. EMTs joined the Governor there, and performed a routine check. He is now spending time with his son and grandson,” the statement continued.

Son Eric Dayton also issued a tweet Monday night and assured everyone that his father is doing “great.”

“I’m with my dad now and he’s doing great. Thank you all for your kind well-wishes and words of concern,” he wrote.