"There is an order to search several homes," Chavez told Canal N television.
Oviedo, 47, is being held for a "preliminary" 10-day period.
Meanwhile, a court in Lima is expected to rule soon on a prosecution request to jail him for 24 months in a separate case in which he is accused of ordering the murders of two trade unionists at a sugar company he controlled.
Several Peruvian soccer officials had previously requested the controversial Oviedo "step aside" for as long as he remained under a legal cloud, but he refused.
(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)