The Chico Police Department says a busy patrol shift pushed staffing beyond its breaking point. Police say between Saturday night and Sunday morning, officers encountered several large fights connected to house parties in the college housing area. Several people were injured. 10 separate fires were set around W. 6th Street. Police say 22 officers were on duty, but it wasn't enough to provide adequate coverage for the city during that time frame. According to a police department statement, 90 percent of the city went without service at different times.