The Christian Liberty Academy in Arlington Heights was vandalized early Saturday morning, police said.
When administrators arrived at the academy at 502 W. Euclid Ave., they discovered a number of broken windows and door panes on the east side of the building, which were shattered by bricks, Arlington Heights Police Capt. Nicholas Pecora said. There are no suspects yet.
Attached to one of the bricks was a note, which referenced speakers scheduled for a Saturday night banquet at the school, said the Rev. Calvin Lindstrom of Christian Liberty. The note read, "This is just a sample of what we will do if you don't shut down Scott Lively and AFTAH," Lindstrom said.
The banquet was organized by the Americans for Truth About Homosexuality, a group that seeks to expose the "homosexual activist agenda," according to its website. The banquet featured speaker and Moody Church pastor Rev. Erwin Lutzer and honored Scott Lively of Defending the Family International and Abiding Truth Ministries with the "American Truthteller" award.
About 30 protesters picketed the banquet outside the academy, but police, who were present at the event, said no arrests were made.
"We don't want to be paranoid, and we're not going to be intimidated, but we're not swaggering either," Lindstrom said.
On Saturday afternoon, an anonymous post on the Chicago Independent Media Center's website took credit for throwing "two chunks of concrete through the windows and doors of the Christian liberty academy" in protest of the banquet. Pecora said police had no information about the post.
The incident remains under investigation, police said.