Police say the crowd was very unruly.
They say they warned people to get off the streets, and when they wouldn't, they had to resort to using pepper spray and force. Police are calling it a riotous situation. Fifteen people were arrested, more than half of them are confirmed Penn State students. Most face charges of disorderly conduct and failure to disperse. State College police say an unruly crowd started blocking traffic on Beaver Avenue, near several large apartment buildings around 2 am Sunday.