LAKEVILLE, Mass. (WBZ) Someone carved the letter "I" then a swastika and the word "Obama" on the 18th hole at the Lakeville Country Club.
It was discovered early Monday morning by greens keepers.
The Secret Service confirms it is working closely with Lakeville police on the case.
"It's just so insulting to the human race and it just shouldn't be part of our doings by anybody. I just can't understand it. It's unforgivable," course owner Gary Mosca told WBZ.
Mosca says he's going to have to call in turf experts to repair the damage.
He doesn't expect it to be completely fixed until next spring.