Taiwan’s authorities said Thursday that several chain stores and government facilities had been hacked as United States House of Representatives Speaker Nancy Pelosi was visiting the island, with insults appearing on public digital screens.

The Criminal Investigation Bureau said these were cyberattacks from unknown Internet IP addresses and is investigating the incident’s origin, state Taiwanese agency CNA said.

Several digital screens of the 7-Eleven convenience store chain displayed messages of "Pelosi, warmonger, leave Taiwan" that according to those responsible for the company came from outside their system.

The same thing happened at the Xinzuoying railway station in Kaohsiung and at a municipal office in Jushan, where messages seen on billboards referred to the US politician as an "old witch."