San Lorenzo keeper Pablo Migliore arrested after match 1 April 2013 Last updated at 10:57 Police in Argentina have arrested the goalkeeper of first division club San Lorenzo on suspicion of aiding and abetting an alleged murderer. Pablo Migliore was arrested when he came off the pitch on Sunday after losing to Newell's Old Boys. Mr Migliore, who played for Boca Juniors until 2008, is suspected of aiding Maximiliano Mazzaro, a member of a group of hardcore Boca Juniors fans. Police are searching for Mr Mazzaro on suspicion of murder. Prosecutors say he is a leading member of "barra brava," a group of Boca Juniors supporters which has in the past been linked to hooliganism and violent behaviour. Mr Mazzaro is wanted in connection with the 2011 death of 56-year-old Ernesto Cirino, who died of injuries sustained during a beating in a neighbourhood row. Police suspect Mr Mazzaro and two other leading members of the supporters group of carrying out the beating. They say they have evidence linking Mr Migliore to Mr Mazzaro, who police say is on the run from them. San Lorenzo Club President Matias Lammens said Mr Migliore had been surprised by his arrest just minutes after Sunday's game at San Lorenzo's Pedro Bidegain stadium. "He wasn't expecting this, we'll ask for his release and the club will respect his contract," Mr Lammens said. Pablo Migliore has not yet commented on the case. His lawyer has denied any knowledge of links between his client and Mr Mazzaro.