People gather in the main square in Krakow, Poland, Monday, Nov. 9, 2026, to commemorate the victims of a shooting attack. (AP Photo/Beata Zawrzel)

Flowers and messages laid out on the main square two days after a shooting in Krakow, Poland, Monday, Nov. 9, 2026. (AP Photo/Beata Zawrzel)

An auto portrait of Magdalena Oksinska, the killed sister of the gunman, is displayed in a gallery in Krakow, Poland, Monday, Nov. 9, 2026. (AP Photo/Beata Zawrzel)

People lay flowers in the city center two days after a deadly shooting in Krakow, Poland, Monday, Nov. 9, 2026. (AP Photo/Beata Zawrzel)

People look to a bullet hole in the window of a restaurant at the main square two days after a shooting in Krakow, Poland, Monday, Nov. 9, 2026. (AP Photo/Beata Zawrzel)

People gather in the main square in Krakow, Poland, Monday, Nov. 9, 2026, to commemorate the victims of a shooting attack. (AP Photo/Beata Zawrzel)

People cheer as a statue of Pope Leo XIV is installed in 'El Niño' park in Callao, Peru, Friday, Nov. 6, 2026, ahead of his planned trip to Uruguay, Argentina, and Peru from November 6 to17. (AP Photo/Guadalupe Pardo)

FILE - This undated electron microscope image provided by the Centers for Disease Control and Prevention on Feb. 4, 2015, shows a measles virus particle, center. (Cynthia Goldsmith/CDC via AP, File)