Police in Argentina have arrested the goalkeeper of first division club San Lorenzo on suspicion of aiding and abetting an alleged murderer, BBC News reported.

Pablo Migliore was arrested when he came off the pitch on Sunday, March 31 after losing to Newell's Old Boys.

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 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 behavior.

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 neighborhood row.

Police suspect Mazzaro and two other leading members of the supporters group of carrying out the beating. They say they have evidence linking Migliore to Mazzaro, who police say is on the run from them.

San Lorenzo Club President Matias Lammens said 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," Lammens said.

Pablo Migliore has not yet commented on the case. His lawyer has denied any knowledge of links between his client and Mazzaro.