Police are stepping up patrols and using plainclothes officers near Grand Valley State University.
Multiple sexual assaults have been reported in the vicinity of off-campus apartment complexes since the start of school.
Captain Mark Bennett is with the Ottawa County Sheriff’s Department.
"It’s our belief that there certainly is a connection (between the cases)," he says. "To say definitely – at this point, I can’t do that but for investigative purposes we’re moving forward as if there is a connection.