Missouri Capitol Police are searching for who placed orange cross-hair stickers outside the Capitol offices of five Democratic senators and one Republican lawmaker, according to the Columbia Daily Tribune.

“We don’t have any explanation,” Democratic state Sen. Jolie Justus said on the Senate floor. “Many of us when we came back to our office this afternoon had gun targets on our nameplates. A few of the senators removed them, only to have them replaced by larger stickers later.”