The explosion, which occurred early Tuesday morning, caused minor damage to the facades and windows of Kasza's and his neighbour's house. No one was injured.
Kasza, a vocal proponent of the interests of the Hungarian minority in Serbia over the past 15 years, declined to speak to the press.
In the 1990s Kasza received a number of threatening telephone calls and letters for his criticism of the Milosevic regime, and this morning's attack was the first open attack on him and his property.
Apart from his political role, Kasza is also a wealthy businessman, and his critics says that this fact might be the reason for the attack.
Following last year's attacks on members of the Hungarian minority, which prompted criticism from the European Union, this is one of the most serious incidents directed against the ethnic Hungarians in Serbia.