SAO PAULO (AP) — Brazilian prosecutors are seeking the arrest of 13 foreign executives from three international companies allegedly involved in a cartel to raise prices for the construction and upkeep of subway and train systems in Sao Paulo.

The press office of the Sao Paulo State Prosecutor’s Office said Friday that none of the 13 executives are in Brazil, and if necessary the federal police will ask the international police agency, Interpol, for help.