Two competitors were shot Sunday during Ironman 70.3 Puerto Rico in the island’s capital of San Juan when two vehicles exchanging gunfire sped past the bicycling leg of the triathlon.

Wisconsin resident Liz Boivin, 26, was hit in the left calf while Puerto Rican racer Miguel Arroyo Ramos, 49, took three bullets to the left side. Both were reported in stable condition, according to the AP.

Upon hearing the shots, a third athlete from New Hampshire crashed his bike into an anthill and suffered multiple bites, according to Puerto Rican newspaper El Vocero.

A passenger in one of the cars, 25-year-old Jose Ramos Tapia, was killed. He had recently served time in prison on drug-related charges. The highway patrol car that followed the chase was shot more than 30 times, El Vocero reports.

Local police indicated that the shooting was an isolated incident, prompting Ironman to continue the event, which hosted about 1,800 athletes from 50 countries.