Someone sprayed graffiti on Pro-Life Action Ministries in St. Paul, including, “Another (expletive) mouth to feed,” “(Expletive) Trump” and an upside-down cross, the group said Monday.

The organization reported to police on Monday morning that their building at 1163 Payne Avenue had been vandalized overnight. The nonprofit said it had not endorsed Donald Trump for president.

Pro-Life Action Ministries’ leader, Brian Gibson, said he also received a harassing phone call on Sunday afternoon, the 44th anniversary of the Supreme Court’s Roe v. Wade decision that legalized abortion.

RELATED: Thousands in St. Paul protest abortion on 44th anniversary of Roe v. Wade

“What I find most disturbing is the hate speech indicated by the upside-down cross, reminiscent of the KKK,” Gibson said in a statement Monday. “Clearly, there are those among pro-abortion advocates who seek to threaten, harass and intimidate those who peacefully seek to protect innocent life. But let me make this even clearer, we are not intimidated. Our work to return protection to the defenseless will continue unabated.” Related Articles Therapy dog-in training stolen in St. Paul found, reunited with owners

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An estimated 5,000 people protested abortion Sunday at the state Capitol grounds. And Pro-Life Action Ministries said it conducted a prayer service, attended by 180 Christians, outside the Planned Parenthood in St. Paul on Sunday afternoon.

Police will be investigating, a department spokesman said.