Two individuals died in separate incidents during a Manjuvirattu event held at Uranganpatti village near Melur in Madurai district on Wednesday, officials said.
Jallikattu is an age-old event celebrated mostly in Tamil Nadu as part of Pongal celebrations.
In Jallikattu, a bull is released into a crowd of people, and participants in the event try to grab the large hump on the bull's back, attempting to bring the bull to a stop.