![Thanassis Stavrakis FILE - Candles and flowers are placed at the location where a 29-year-old Greek soccer fan died after overnight clashes between rival supporters in Nea Philadelphia suburb, in Athens, Greece, Aug. 8, 2023. A recent surge in violence around soccer games is contributing to alarm over security when Germany hosts the European Championship. Some 22,000 police officers will be on duty each day for the tournament. (AP Photo/Thanassis Stavrakis, File)](https://mapi.associatedpress.com/v2/items/d67adc3e8013448ba12c8277cba0d330/preview/preview.jpg?s=680x&wm=false)
FILE - Candles and flowers are placed at the location where a 29-year-old Greek soccer fan died after overnight clashes between rival supporters in Nea Philadelphia suburb, in Athens, Greece, Aug. 8, 2023. A recent surge in violence around soccer games is contributing to alarm over security when Germany hosts the European Championship. Some 22,000 police officers will be on duty each day for the tournament. (AP Photo/Thanassis Stavrakis, File)
![Salvatore Laporta FILE - Supporters of the Eintracht Frankfurt soccer team set a police car afire as they clash with police in Naples, southern Italy, March 15, 2023, where their team is about to play a Champions League, round of 16, second leg soccer match against Naples. A recent surge in violence around soccer games is contributing to alarm over security when Germany hosts the European Championship. Some 22,000 police officers will be on duty each day for the tournament. (AP Photo/Salvatore Laporta, File)](https://mapi.associatedpress.com/v2/items/e8c316d07a8c4395ab38ccbe810945be/preview/preview.jpg?s=680x&wm=false)
FILE - Supporters of the Eintracht Frankfurt soccer team set a police car afire as they clash with police in Naples, southern Italy, March 15, 2023, where their team is about to play a Champions League, round of 16, second leg soccer match against Naples. A recent surge in violence around soccer games is contributing to alarm over security when Germany hosts the European Championship. Some 22,000 police officers will be on duty each day for the tournament. (AP Photo/Salvatore Laporta, File)
![Ebrahim Noroozi FILE - Hundreds of German local state police and federal police practice tactics in preparation for the European Championship in the village of Stützerbach, in Ilmenau, Germany, April 23, 2024. A recent surge in violence around soccer games is contributing to alarm over security when Germany hosts the European Championship. Some 22,000 police officers will be on duty each day for the tournament. (AP Photo/Ebrahim Noroozi, File)](https://mapi.associatedpress.com/v2/items/5f721a0c76884e0a9ed9268ab8e0fc0e/preview/preview.jpg?s=680x&wm=false)
FILE - Hundreds of German local state police and federal police practice tactics in preparation for the European Championship in the village of Stützerbach, in Ilmenau, Germany, April 23, 2024. A recent surge in violence around soccer games is contributing to alarm over security when Germany hosts the European Championship. Some 22,000 police officers will be on duty each day for the tournament. (AP Photo/Ebrahim Noroozi, File)
![Salvatore Laporta FILE - Supporters of the Eintracht Frankfurt soccer team set a police car afire as they clash with police in Naples, southern Italy, March 15, 2023. A recent surge in violence around soccer games is contributing to alarm over security when Germany hosts the European Championship. Some 22,000 police officers will be on duty each day for the tournament. (AP Photo/Salvatore Laporta, File)](https://mapi.associatedpress.com/v2/items/561ffb5c493947a8b6c4fe3b56cbae7c/preview/preview.jpg?s=680x&wm=false)
FILE - Supporters of the Eintracht Frankfurt soccer team set a police car afire as they clash with police in Naples, southern Italy, March 15, 2023. A recent surge in violence around soccer games is contributing to alarm over security when Germany hosts the European Championship. Some 22,000 police officers will be on duty each day for the tournament. (AP Photo/Salvatore Laporta, File)
![Ebrahim Noroozi FILE - Hundreds of German local state police and federal police practice tactics in preparation for the European Championship in the village of Stützerbach, in Ilmenau, Germany, April 23, 2024. A recent surge in violence around soccer games is contributing to alarm over security when Germany hosts the European Championship. Some 22,000 police officers will be on duty each day for the tournament. (AP Photo/Ebrahim Noroozi, File)](https://mapi.associatedpress.com/v2/items/f2b7c756658c40dfa4f50b8e871c572e/preview/preview.jpg?s=680x&wm=false)
FILE - Hundreds of German local state police and federal police practice tactics in preparation for the European Championship in the village of Stützerbach, in Ilmenau, Germany, April 23, 2024. A recent surge in violence around soccer games is contributing to alarm over security when Germany hosts the European Championship. Some 22,000 police officers will be on duty each day for the tournament. (AP Photo/Ebrahim Noroozi, File)
![Ebrahim Noroozi FILE - German local state police and federal police practice tactics in preparation for the European Championship in the village of Stützerbach, in Ilmenau, Germany, April 23, 2024. A recent surge in violence around soccer games is contributing to alarm over security when Germany hosts the European Championship. Some 22,000 police officers will be on duty each day for the tournament. (AP Photo/Ebrahim Noroozi, File)](https://mapi.associatedpress.com/v2/items/7fd5fd22468940ec954642fc8695380c/preview/preview.jpg?s=680x&wm=false)
FILE - German local state police and federal police practice tactics in preparation for the European Championship in the village of Stützerbach, in Ilmenau, Germany, April 23, 2024. A recent surge in violence around soccer games is contributing to alarm over security when Germany hosts the European Championship. Some 22,000 police officers will be on duty each day for the tournament. (AP Photo/Ebrahim Noroozi, File)
![Michael Varaklas FILE - Soccer fans, most of them from Croatia, cover their faces as the police escort them from the General Police Directorate of Attica to court, in Athens, Greece, Aug. 13, 2023. A 29-year-old AEK Athens fan died from a stab wound, and ten others were injured when scores of Croatian supporters wielding wooden clubs and metal bats attacked bystanders outside AEK's Opap Arena on Monday. A recent surge in violence around soccer games is contributing to alarm over security when Germany hosts the European Championship. Some 22,000 police officers will be on duty each day for the tournament. (AP Photo/Michael Varaklas, File)](https://mapi.associatedpress.com/v2/items/3f8a7dcf50b347a0879896b37a82a9af/preview/preview.jpg?s=680x&wm=false)
FILE - Soccer fans, most of them from Croatia, cover their faces as the police escort them from the General Police Directorate of Attica to court, in Athens, Greece, Aug. 13, 2023. A 29-year-old AEK Athens fan died from a stab wound, and ten others were injured when scores of Croatian supporters wielding wooden clubs and metal bats attacked bystanders outside AEK's Opap Arena on Monday. A recent surge in violence around soccer games is contributing to alarm over security when Germany hosts the European Championship. Some 22,000 police officers will be on duty each day for the tournament. (AP Photo/Michael Varaklas, File)