Graffiti was discovered on the Cathedral of St. Paul last weekend and police are investigating it as a possible hate crime.
White-colored upside-down crosses were spray-painted on five of the six main doors on the Summit Avenue side, according to a police incident report. It occurred between Friday night and Saturday morning.
Police received an initial call about the incident Saturday and generated a police report Monday.
The graffiti was quickly removed, said the Very Rev. Joseph Johnson, the cathedral's rector.
"We don't know if this was some silly prank from someone or a drunken rampage or something more serious," he said.
The investigation into whether the graffiti was a bias-motivated crime is because of the upside-down crosses on the church and "what they have to come to symbolize in popular culture," said Sgt. Pete Crum, a St. Paul police spokesman.