MONTERREY, Mexico – The Attorney General’s Office in the northern Mexican state of Nuevo Leon is trying to find those responsible for a brutal attack on a Tigres UANL fan who was seriously injured over the weekend by supporters of the rival Monterrey Rayados, officials told EFE.“According to the most recent reports, the victim is in critical condition, and doctors at University Hospital are working to save the patient’s life,” an AG’s office spokesman said.On Sunday afternoon, a group of Rayados fans fought with Tigres fans outside . . .