Morgantown, W.Va. ? West Virginia is investigating whether some football players wore more than just helmets during the first two days of practice, which would be a violation of NCAA rules.

WVU athletics spokesman Michael Fragale said Tuesday the school is aware some players wore vests during the first two days of practice, when NCAA rules stipulate only helmets are allowed. He says WVU is exploring further and if NCAA rules were violated, will declare a secondary infraction.

West Virginia began practice on Saturday, just two days after the NCAA alleged the West Virginia football program committed five major violations and one secondary violation from 2005 to 2009.