Updated

Nine cars belonging to Red Star Belgrade soccer players had their windows smashed and shampoo bottles hurled inside in an apparent protest by fans against the team's poor results.

The incidents in the Red Star stadium parking lot on Tuesday came a day after the players issued an open letter claiming Serbia's most popular club is facing an "alarming" financial situation amid bickering within its leadership.

The players said they have to train on poorly maintained fields in the largest stadium in the Balkans, and they even lack shampoo in the dressing room.

Red Star, which won the European Cup in 1991, owes millions of dollars to its players, coaches and creditors and for years has endured poor results. The fans blame the players.