Levski Sofia, one of Bulgaria's biggest football clubs, has been fined 19,200 euros ($23,000) for racist chants by its supporters, the Bulgarian Football Union (BFU) said.

Fans made monkey noises directed at opponents Litex Lovech's French-born Senegalese defender Jackson Mendy during last weekend's league game at home that ended 2-2.

"I did not hear the fans, it does not matter to me," Mendy said afterwards.

Levski fans are notorious for such behaviour and the club was already fined in mid-October after fans mocked European governing body UEFA's anti-racism campaign with a "Say Yes to Racism" banner during a game.

The 26-time Bulgarian champions were also handed heavy fines for racism in 2012 and 2013.