Michigan Wolverines receive letter of inquiry from NCAA - ESPN University president Mary Sue Coleman announced Monday the NCAA has given the school a notice of inquiry. "It marks the beginning of an investigation," NCAA spokeswoman Stacey Osburn explained. The NCAA's enforcement staff often looks into allegations, according to Osburn, but only sends school presidents a letter of inquiry when an initial review determines a violation may have occurred based on credible information. According to the letter sent to Coleman, the NCAA enforcement staff intends to complete the investigation by Dec. 31, 2009. The school started looking into allegations brought against Rich Rodriguez's program in August after a report in the Detroit Free Press cited anonymous players claiming the amount of time they spent during the season and in the offseason exceeded NCAA limits.