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Adam Koprowski, a spokesperson for Jagiellonian University, told local newspaper Dziennik Polski: “We are extremely sorry that such a situation took place. “This banner, from what I know, was hung by someone at night and was immediately removed from the fence after this fact was revealed, along with other slogans. “The case was also reported to the police, which is conducting an investigation.” A spokesman for Krakow police said that the incident is being investigated under the crime of “incitement to hatred on the grounds of nationality.”