AURORA --Shots were fired at a 15-year-old girl Monday who was walking outside during gym class.The girl was not hit. It happened at a park in west suburban Aurora. Police are questioning four teenagers. Police say the girl was walking on a path near East Aurora High School as part of her gym class. There were other students nearby when a car full of teenagers pulled up. Four got out and ran toward her. One pulled a gun and fired at least two shots. They missed. "It's a very brazen offense. And again, there were a lot of people in danger," said Dan Ferrelli, Aurora Police spokesperson/ It's a public park around Mastodon Lake connected to the high school. And it's usually crowded with people, including students who use it for recreation. Police say they believe the teenagers were targeting the girl. But that's little consolation to some parents. "I come here with my son and brothers every day, so it was kind of sad because I mean, now I don't know if I will be safe," said Rafael Romero. Police responded quickly to a 911 call about the shooting. And minutes later, an officer found four teenagers several blocks away. "The sergeant immediately stopped the four men, held them at gunpoint, waited for backup to arrive. When they searched where the youth had walked, they did find a loaded handgun inside the bushes," said Ferrelli. Police arrested the four, including two 14-year-olds, a 15-year-old and a 16-year-old. Investigators believe they were targeting the victim. Witnesses also saw one of the men toss something into the lake. Police searched the area. They have not released the suspects' names because they are juveniles.