Two Palmeiras fans were detained at a federal highway police checkpoint on Sunday night following the team's 3-1 loss to Cruzeiro in Sao Paulo, the federal highway police said in a statement.

The fans were carrying an American-made grenade and confessed they were going to throw it at the bus transporting Cruzeiro fans back to the team's hometown of Belo Horizonte, about 340 miles northeast of Sao Paulo.