There was an option not to fire [the tear gas] to respond to the supporters' violence," judge Amsya said. Last October, supporters of the home team Arema FC invaded the stadium's pitch after their side suffered a 3-2 defeat to their fierce East Java rivals Persebaya SurThere was an option not to fire [the tear gas] to respond to the supporters' violence," judge Amsya said. Last October, supporters of the home team Arema FC invaded the stadium's pitch after their side suffered a 3-2 defeat to their fierce East Java rivals Persebaya Surabaya. Police responded by firing tear gas at those on the pitch and fans in the stadium, who tried to flee. That prompted a crowd crush at the narrow exits of the stadium.คาสิโนสด At least 40 children were among those killed that night. More than 600 people were injured.abaya. Police responded by firing tear gas at those on the pitch and fans in the stadium, who tried to flee. That prompted a crowd crush at the narrow exits of the stadium. At least 40 children were among those killed that night. More than 600 people were injured.