SAN ANTONIO In a statement to KSAT, the San Antonio River Authority confirmed an ammonia spill that happened at San Pedro Creek on Wednesday and is affecting fish and animals who call the creek home. Yviand Serbones-Hernandez, brand and communications coordinator for the San Antonio River Authority said in a statement that the spill is believed to have happened Kiolbassa Smoked Meats plant by a storm drain inlet on S. San Marcos Street. Hernandez said the River Authoritys Environmental Investigations team confirmed the odor and reported that approximately 50 fish were killed. Hernandez said River Authority staff has continued to monitor the area and reported an increase of dead fish on Wednesday. The River Authority was also made aware of dead fish observed at the river junction of San Pedro Creek and the San Antonio River on the Mission Reach segment.