Rome , Italy ( CNN ) -- Four English football fans were attacked in Italy on the eve of a game Thursday between Liverpool and Naples , Naples police told CNN . Two were stabbed and have been hospitalized with serious but not life-threatening conditions , police said . Two were beaten with sticks and one is hospitalized in serious condition , they said . The other one , who was attacked in a different incident , is not badly hurt . Three men have been arrested . Police blamed the attacks on `` football fanaticism '' and are looking for the other attackers , they said . An Italian restaurant owner also was attacked Wednesday night after confronting masked men who were harassing British tourists eating in his restaurant , police said Thursday . Tempers already were running high in Naples because tons of uncollected garbage is piling up , a result of landfills in the region being full . Police said security for Thursday 's match pitting Liverpool against Serie A side Napoli is tighter than usual because of the garbage crisis . Liverpool Football Club warned supporters traveling to Italy for the Europa League match to `` be careful , stick together and heed the safety advice printed on your ticket . ''
Two Liverpool supporters are stabbed and two are beaten with sticks . An Italian man is injured defending British tourists . A German woman is attacked by a group of youths who have been drinking in the street. Liverpool is set to play SSC Napoli Thursday night .